Idaho City Weather Records (USC00104442)
Record envelope, standing records and threshold days for Idaho City (USC00104442), Idaho, United States, with 120 years of record.
Key Facts for Idaho City
- Idaho City (USC00104442) is a weather station in Idaho, United States at 43.84 latitude and -115.83 longitude, 1,209 m (3,965 ft) above sea level.
- The station reports from 1894 to 2013, 120 years of record.
- 1,464 records set at Idaho City still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Idaho City tied a daily record low maximum temperature of -8.3 C (17.1 F) on 15 January 2013.
About the Station
- Location: Idaho, United States, 43.84 latitude, -115.83 longitude.
- Elevation: 1,209 m (3,965 ft).
- Period of record: 1894 to 2013, 120 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 23.9 C (75.0 F) | -38.9 C (-38.0 F) | n/a | n/a |
| Feb | 24.4 C (75.9 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Mar | 25.6 C (78.1 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Apr | 31.7 C (89.1 F) | -22.2 C (-8.0 F) | n/a | n/a |
| May | 36.1 C (97.0 F) | -11.7 C (10.9 F) | n/a | n/a |
| Jun | 41.1 C (106.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Jul | 42.8 C (109.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Sep | 37.8 C (100.0 F) | -11.7 C (10.9 F) | n/a | n/a |
| Oct | 33.9 C (93.0 F) | -16.7 C (1.9 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -27.8 C (-18.0 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -35.6 C (-32.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1894 | 23 |
| 1895 | 21 |
| 1896 | 32 |
| 1897 | 24 |
| 1898 | 10 |
| 1899 | 18 |
| 1900 | 7 |
| 1901 | 27 |
| 1902 | 14 |
| 1903 | 2 |
| 1904 | 31 |
| 1905 | 16 |
| 1916 | 18 |
| 1917 | 27 |
| 1918 | 15 |
| 1919 | 35 |
| 1920 | 8 |
| 1921 | 15 |
| 1922 | 12 |
| 1923 | 3 |
| 1924 | 26 |
| 1925 | 24 |
| 1926 | 47 |
| 1927 | 19 |
| 1928 | 10 |
| 1929 | 20 |
| 1930 | 11 |
| 1931 | 24 |
| 1932 | 14 |
| 1933 | 22 |
| 1934 | 48 |
| 1935 | 14 |
| 1936 | 28 |
| 1937 | 22 |
| 1938 | 6 |
| 1939 | 20 |
| 1940 | 21 |
| 1941 | 2 |
| 1942 | 20 |
| 1943 | 7 |
| 1944 | 5 |
| 1945 | 7 |
| 1946 | 6 |
| 1947 | 11 |
| 1948 | 6 |
| 1949 | 25 |
| 1950 | 12 |
| 1951 | 10 |
| 1952 | 5 |
| 1953 | 9 |
| 1954 | 11 |
| 1955 | 17 |
| 1956 | 14 |
| 1957 | 3 |
| 1958 | 8 |
| 1959 | 6 |
| 1960 | 10 |
| 1961 | 9 |
| 1962 | 16 |
| 1963 | 18 |
| 1964 | 15 |
| 1965 | 8 |
| 1966 | 11 |
| 1967 | 7 |
| 1968 | 8 |
| 1969 | 11 |
| 1970 | 7 |
| 1971 | 9 |
| 1972 | 14 |
| 1973 | 7 |
| 1974 | 7 |
| 1975 | 11 |
| 1976 | 10 |
| 1977 | 11 |
| 1978 | 18 |
| 1979 | 7 |
| 1980 | 7 |
| 1981 | 21 |
| 1982 | 5 |
| 1983 | 18 |
| 1984 | 13 |
| 1985 | 17 |
| 1986 | 15 |
| 1987 | 12 |
| 1988 | 7 |
| 1989 | 11 |
| 1990 | 19 |
| 1991 | 5 |
| 1992 | 21 |
| 1993 | 15 |
| 1994 | 4 |
| 1995 | 12 |
| 1996 | 8 |
| 1997 | 8 |
| 1998 | 6 |
| 1999 | 10 |
| 2000 | 4 |
| 2001 | 9 |
| 2002 | 13 |
| 2003 | 9 |
| 2004 | 4 |
| 2005 | 3 |
| 2006 | 12 |
| 2007 | 4 |
| 2008 | 11 |
| 2009 | 9 |
| 2010 | 12 |
| 2011 | 2 |
| 2012 | 2 |
| 2013 | 4 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1937-01-08 | Record low maximum temperature | Record low maximum temperature -15.0 C (5.0 F) |
| 1937-01-08 | Record low minimum temperature | Record low minimum temperature -37.2 C (-35.0 F) |
| 1937-01-21 | Record low minimum temperature | Record low minimum temperature -38.9 C (-38.0 F) |
| 1957-02-01 | Record daily snowfall | Record daily snowfall 61.2 cm (24.1 in) |
| 1990-12-22 | Record low maximum temperature | Record low maximum temperature -17.8 C (0.0 F) |
| 1990-12-23 | Record low maximum temperature | Record low maximum temperature -18.3 C (-0.9 F) |
Wettest Day of Each Month
Dec: 115.6 mm (4.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 54.6 mm (2.1 in) | 5 January 1943 |
| Feb | 53.1 mm (2.1 in) | 1 February 1963 |
| Mar | 60.5 mm (2.4 in) | 31 March 1928 |
| Apr | 40.6 mm (1.6 in) | 13 April 1900 |
| May | 40.1 mm (1.6 in) | 20 May 1923 |
| Jun | 66.3 mm (2.6 in) | 12 June 1958 |
| Jul | 50.8 mm (2.0 in) | 4 July 1902 |
| Aug | 40.6 mm (1.6 in) | 11 August 1941 |
| Sep | 45.0 mm (1.8 in) | 20 September 1982 |
| Oct | 71.1 mm (2.8 in) | 19 October 1900 |
| Nov | 63.5 mm (2.5 in) | 20 November 1921 |
| Dec | 115.6 mm (4.6 in) | 16 December 1929 |
Period of Record Coverage
1894 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1894 | 285 | 78% | No |
| 1895 | 342 | 94% | Yes |
| 1896 | 318 | 87% | No |
| 1897 | 316 | 87% | No |
| 1898 | 200 | 55% | No |
| 1899 | 238 | 65% | No |
| 1900 | 216 | 59% | No |
| 1901 | 295 | 81% | No |
| 1902 | 203 | 56% | No |
| 1903 | 109 | 30% | No |
| 1904 | 299 | 82% | No |
| 1905 | 240 | 66% | No |
| 1916 | 194 | 53% | No |
| 1917 | 325 | 89% | No |
| 1918 | 277 | 76% | No |
| 1919 | 207 | 57% | No |
| 1920 | 267 | 73% | No |
| 1921 | 178 | 49% | No |
| 1922 | 344 | 94% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 354 | 97% | Yes |
| 1926 | 359 | 98% | Yes |
| 1927 | 355 | 97% | Yes |
| 1928 | 365 | 100% | Yes |
| 1929 | 358 | 98% | Yes |
| 1930 | 359 | 98% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 363 | 99% | Yes |
| 1938 | 363 | 99% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 362 | 99% | Yes |
| 1942 | 358 | 98% | Yes |
| 1943 | 351 | 96% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 356 | 98% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 360 | 99% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 362 | 99% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 332 | 91% | Yes |
| 1957 | 362 | 99% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 357 | 98% | Yes |
| 1960 | 359 | 98% | Yes |
| 1961 | 359 | 98% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 362 | 99% | Yes |
| 1964 | 360 | 98% | Yes |
| 1965 | 359 | 98% | Yes |
| 1966 | 361 | 99% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 361 | 99% | Yes |
| 1974 | 363 | 99% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 331 | 90% | Yes |
| 1981 | 358 | 98% | Yes |
| 1982 | 337 | 92% | Yes |
| 1983 | 351 | 96% | Yes |
| 1984 | 360 | 98% | Yes |
| 1985 | 361 | 99% | Yes |
| 1986 | 358 | 98% | Yes |
| 1987 | 361 | 99% | Yes |
| 1988 | 363 | 99% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 354 | 97% | Yes |
| 1991 | 359 | 98% | Yes |
| 1992 | 356 | 97% | Yes |
| 1993 | 360 | 99% | Yes |
| 1994 | 360 | 99% | Yes |
| 1995 | 353 | 97% | Yes |
| 1996 | 360 | 98% | Yes |
| 1997 | 358 | 98% | Yes |
| 1998 | 353 | 97% | Yes |
| 1999 | 352 | 96% | Yes |
| 2000 | 355 | 97% | Yes |
| 2001 | 347 | 95% | Yes |
| 2002 | 350 | 96% | Yes |
| 2003 | 329 | 90% | Yes |
| 2004 | 345 | 94% | Yes |
| 2005 | 317 | 87% | No |
| 2006 | 349 | 96% | Yes |
| 2007 | 290 | 79% | No |
| 2008 | 325 | 89% | No |
| 2009 | 343 | 94% | Yes |
| 2010 | 337 | 92% | Yes |
| 2011 | 334 | 92% | Yes |
| 2012 | 360 | 98% | Yes |
| 2013 | 31 | 8% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 15 January 2013 | Idaho City, US | daily low max (Tie) | -8.3 C (17.1 F) | tie | 96 years | 9 of 100 (Routine) |
| 14 January 2013 | Idaho City, US | daily low min | -25.0 C (-13.0 F) | 1.1 C (2.0 F) | 83 years | 35 of 100 (Notable) |
| 14 January 2013 | Idaho City, US | daily low max | -8.3 C (17.1 F) | 2.2 C (4.0 F) | 6 years | 16 of 100 (Routine) |
| 13 January 2013 | Idaho City, US | daily low min | -25.6 C (-14.1 F) | 0.6 C (1.1 F) | 81 years | 34 of 100 (Routine) |
| 3 January 2013 | Idaho City, US | daily low max | -8.3 C (17.1 F) | 1.1 C (2.0 F) | 53 years | 27 of 100 (Routine) |
| 23 October 2012 | Idaho City, US | daily snow depth | 5.1 cm (2.0 in) | 5.1 cm (2.0 in) | 94 years | 20 of 100 (Routine) |
| 7 October 2012 | Idaho City, US | daily low min | -8.3 C (17.1 F) | 0.5 C (0.9 F) | 51 years | 26 of 100 (Routine) |
| 6 October 2012 | Idaho City, US | daily low min (Tie) | -7.8 C (18.0 F) | tie | 57 years | 6 of 100 (Routine) |
| 20 June 2012 | Idaho City, US | daily low min (Tie) | -1.7 C (28.9 F) | tie | 88 years | 9 of 100 (Routine) |
| 27 April 2012 | Idaho City, US | daily rain | 24.9 mm (1.0 in) | 6.4 mm (0.25 in) | 117 years | 20 of 100 (Routine) |
| 24 April 2012 | Idaho City, US | daily high max | 29.4 C (84.9 F) | 2.2 C (4.0 F) | 35 years | 23 of 100 (Routine) |
| 21 March 2012 | Idaho City, US | daily low max (Tie) | 0.0 C (32.0 F) | tie | 114 years | 10 of 100 (Routine) |
| 29 February 2012 | Idaho City, US | daily snowfall | 12.7 cm (5.0 in) | 7.6 cm (3.0 in) | 96 years | 47 of 100 (Notable) |
| 21 February 2012 | Idaho City, US | daily low max (Tie) | -1.1 C (30.0 F) | tie | 5 years | 2 of 100 (Routine) |
| 20 January 2012 | Idaho City, US | daily rain | 30.0 mm (1.2 in) | 2.6 mm (0.10 in) | 54 years | 29 of 100 (Routine) |
| 19 January 2012 | Idaho City, US | daily rain | 53.8 mm (2.1 in) | 20.8 mm (0.8 in) | 42 years | 47 of 100 (Notable) |
| 19 January 2012 | Idaho City, US | monthly snowfall | 49.5 cm (19.5 in) | 1.2 cm (0.5 in) | 89 years | 47 of 100 (Notable) |
| 7 October 2011 | Idaho City, US | daily low max | 4.4 C (39.9 F) | 3.9 C (7.0 F) | 53 years | 32 of 100 (Routine) |
| 6 October 2011 | Idaho City, US | daily rain | 24.1 mm (0.9 in) | 5.0 mm (0.20 in) | 85 years | 20 of 100 (Routine) |
| 23 June 2011 | Idaho City, US | daily rain (Tie) | 5.1 mm (0.20 in) | tie | 58 years | 6 of 100 (Routine) |
Climate Trend
85 complete years, 1895 to 2012| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1895 | 6.9 C | -0.13 C |
| 1897 | 7.2 C | +0.18 C |
| 1922 | 7.0 C | 0.00 C |
| 1923 | 7.1 C | +0.13 C |
| 1925 | 9.0 C | +1.98 C |
| 1926 | 9.3 C | +2.25 C |
| 1927 | 7.5 C | +0.44 C |
| 1928 | 7.6 C | +0.61 C |
| 1929 | 6.8 C | -0.21 C |
| 1930 | 6.9 C | -0.14 C |
| 1931 | 7.5 C | +0.48 C |
| 1932 | 6.4 C | -0.62 C |
| 1933 | 7.1 C | +0.07 C |
| 1934 | 9.8 C | +2.77 C |
| 1935 | 6.8 C | -0.26 C |
| 1936 | 7.6 C | +0.56 C |
| 1937 | 6.7 C | -0.30 C |
| 1938 | 7.7 C | +0.65 C |
| 1939 | 8.3 C | +1.29 C |
| 1940 | 8.9 C | +1.89 C |
| 1941 | 7.9 C | +0.93 C |
| 1942 | 6.6 C | -0.37 C |
| 1943 | 7.1 C | +0.05 C |
| 1944 | 7.0 C | +0.01 C |
| 1945 | 7.0 C | +0.01 C |
| 1946 | 6.7 C | -0.34 C |
| 1947 | 7.3 C | +0.30 C |
| 1948 | 6.0 C | -0.97 C |
| 1949 | 6.3 C | -0.76 C |
| 1950 | 6.7 C | -0.34 C |
| 1951 | 6.1 C | -0.89 C |
| 1952 | 6.5 C | -0.53 C |
| 1953 | 7.6 C | +0.54 C |
| 1954 | 7.2 C | +0.20 C |
| 1955 | 5.4 C | -1.57 C |
| 1957 | 6.6 C | -0.43 C |
| 1958 | 7.8 C | +0.81 C |
| 1959 | 7.1 C | +0.08 C |
| 1960 | 6.9 C | -0.12 C |
| 1961 | 7.5 C | +0.50 C |
| 1962 | 6.8 C | -0.22 C |
| 1963 | 7.5 C | +0.53 C |
| 1964 | 5.9 C | -1.10 C |
| 1965 | 6.9 C | -0.09 C |
| 1966 | 7.7 C | +0.65 C |
| 1967 | 7.8 C | +0.75 C |
| 1968 | 7.2 C | +0.17 C |
| 1969 | 7.2 C | +0.15 C |
| 1970 | 6.9 C | -0.14 C |
| 1971 | 6.6 C | -0.45 C |
| 1972 | 6.6 C | -0.46 C |
| 1973 | 7.6 C | +0.55 C |
| 1974 | 7.2 C | +0.17 C |
| 1975 | 6.5 C | -0.54 C |
| 1976 | 6.8 C | -0.18 C |
| 1977 | 6.9 C | -0.11 C |
| 1978 | 7.2 C | +0.17 C |
| 1979 | 7.2 C | +0.17 C |
| 1981 | 8.5 C | +1.49 C |
| 1982 | 6.5 C | -0.55 C |
| 1983 | 7.5 C | +0.53 C |
| 1984 | 6.2 C | -0.80 C |
| 1985 | 5.0 C | -2.01 C |
| 1986 | 7.4 C | +0.35 C |
| 1987 | 7.2 C | +0.20 C |
| 1988 | 7.0 C | -0.05 C |
| 1989 | 6.3 C | -0.73 C |
| 1990 | 6.5 C | -0.54 C |
| 1991 | 6.7 C | -0.29 C |
| 1992 | 7.5 C | +0.46 C |
| 1993 | 5.2 C | -1.80 C |
| 1994 | 7.2 C | +0.14 C |
| 1995 | 6.9 C | -0.12 C |
| 1996 | 6.7 C | -0.34 C |
| 1997 | 6.8 C | -0.23 C |
| 1998 | 7.4 C | +0.42 C |
| 1999 | 6.5 C | -0.52 C |
| 2000 | 6.8 C | -0.22 C |
| 2001 | 6.9 C | -0.10 C |
| 2002 | 6.5 C | -0.49 C |
| 2004 | 6.7 C | -0.34 C |
| 2006 | 6.6 C | -0.45 C |
| 2009 | 6.1 C | -0.87 C |
| 2011 | 5.5 C | -1.48 C |
| 2012 | 6.8 C | -0.22 C |
The annual mean temperature here has fallen by 0.10 C (0.04 to 0.16) per decade over 1895 to 2012. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 85 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.10 C (-0.16 to -0.04) per decade | -0.2 F (-0.3 to -0.1) per decade | 1895 to 2012 | 85 | Fall |
| Mean daily maximum | -0.2 C (-0.3 to -0.2) per decade | -0.4 F (-0.6 to -0.3) per decade | 1895 to 2012 | 85 | Fall |
| Mean daily minimum | 0.04 C (-0.04 to 0.12) per decade | 0.1 F (-0.1 to 0.2) per decade | 1895 to 2012 | 85 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1894 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1934 | 37.5 C (99.5 F) | 110 |
| Coldest night (TNn) | -38.9 C (-38.0 F) | 1937 | -25.6 C (-14.1 F) | 110 |
| Wettest day (Rx1day) | 115.6 mm (4.6 in) | 1929 | 34.5 mm (1.4 in) | 117 |
| Wettest five days (Rx5day) | 174.4 mm (6.9 in) | 1955 | 64.1 mm (2.5 in) | 117 |
| Longest dry spell (CDD) | 136 days | 1905 | 42 days | 117 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1894 | 40.0 C (104.0 F) |
| 1895 | 36.7 C (98.1 F) |
| 1896 | 36.7 C (98.1 F) |
| 1897 | 38.3 C (100.9 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 36.1 C (97.0 F) |
| 1900 | 39.4 C (102.9 F) |
| 1901 | 38.3 C (100.9 F) |
| 1902 | 32.2 C (90.0 F) |
| 1903 | 32.2 C (90.0 F) |
| 1904 | 38.3 C (100.9 F) |
| 1905 | 34.4 C (93.9 F) |
| 1909 | n/a |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | 35.0 C (95.0 F) |
| 1917 | 36.7 C (98.1 F) |
| 1918 | 38.3 C (100.9 F) |
| 1919 | 36.1 C (97.0 F) |
| 1920 | 39.4 C (102.9 F) |
| 1921 | 35.0 C (95.0 F) |
| 1922 | 37.8 C (100.0 F) |
| 1923 | 37.2 C (99.0 F) |
| 1924 | 39.4 C (102.9 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 39.4 C (102.9 F) |
| 1927 | 38.3 C (100.9 F) |
| 1928 | 40.6 C (105.1 F) |
| 1929 | 38.9 C (102.0 F) |
| 1930 | 37.8 C (100.0 F) |
| 1931 | 41.1 C (106.0 F) |
| 1932 | 38.3 C (100.9 F) |
| 1933 | 42.2 C (108.0 F) |
| 1934 | 42.8 C (109.0 F) |
| 1935 | 40.6 C (105.1 F) |
| 1936 | 41.1 C (106.0 F) |
| 1937 | 38.3 C (100.9 F) |
| 1938 | 37.2 C (99.0 F) |
| 1939 | 40.0 C (104.0 F) |
| 1940 | 41.1 C (106.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 40.0 C (104.0 F) |
| 1943 | 38.9 C (102.0 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 38.9 C (102.0 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 36.1 C (97.0 F) |
| 1949 | 38.3 C (100.9 F) |
| 1950 | 37.8 C (100.0 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 37.2 C (99.0 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 35.0 C (95.0 F) |
| 1958 | 36.7 C (98.1 F) |
| 1959 | 38.3 C (100.9 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 41.1 C (106.0 F) |
| 1962 | 36.1 C (97.0 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 37.8 C (100.0 F) |
| 1968 | 37.8 C (100.0 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 36.1 C (97.0 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 37.2 C (99.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 39.4 C (102.9 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 38.3 C (100.9 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 37.8 C (100.0 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 38.3 C (100.9 F) |
| 1995 | 36.1 C (97.0 F) |
| 1996 | 37.2 C (99.0 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 38.9 C (102.0 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 41.7 C (107.1 F) |
| 2003 | 40.0 C (104.0 F) |
| 2004 | 36.7 C (98.1 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 38.9 C (102.0 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 37.2 C (99.0 F) |
| 2010 | 36.1 C (97.0 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 5.6 C (42.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1894 | -23.9 C (-11.0 F) |
| 1895 | -24.4 C (-11.9 F) |
| 1896 | -27.8 C (-18.0 F) |
| 1897 | -25.0 C (-13.0 F) |
| 1898 | -27.2 C (-17.0 F) |
| 1899 | -23.3 C (-9.9 F) |
| 1900 | -20.6 C (-5.1 F) |
| 1901 | -21.7 C (-7.1 F) |
| 1902 | -26.7 C (-16.1 F) |
| 1903 | -13.3 C (8.1 F) |
| 1904 | -30.6 C (-23.1 F) |
| 1905 | -32.8 C (-27.0 F) |
| 1909 | n/a |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | -25.6 C (-14.1 F) |
| 1917 | -30.0 C (-22.0 F) |
| 1918 | -24.4 C (-11.9 F) |
| 1919 | -33.9 C (-29.0 F) |
| 1920 | -23.3 C (-9.9 F) |
| 1921 | -18.3 C (-0.9 F) |
| 1922 | -32.2 C (-26.0 F) |
| 1923 | -28.3 C (-18.9 F) |
| 1924 | -29.4 C (-20.9 F) |
| 1925 | -18.3 C (-0.9 F) |
| 1926 | -25.6 C (-14.1 F) |
| 1927 | -31.7 C (-25.1 F) |
| 1928 | -23.3 C (-9.9 F) |
| 1929 | -31.7 C (-25.1 F) |
| 1930 | -33.3 C (-27.9 F) |
| 1931 | -26.1 C (-15.0 F) |
| 1932 | -27.8 C (-18.0 F) |
| 1933 | -36.7 C (-34.1 F) |
| 1934 | -17.2 C (1.0 F) |
| 1935 | -22.2 C (-8.0 F) |
| 1936 | -30.6 C (-23.1 F) |
| 1937 | -38.9 C (-38.0 F) |
| 1938 | -21.1 C (-6.0 F) |
| 1939 | -27.2 C (-17.0 F) |
| 1940 | -20.6 C (-5.1 F) |
| 1941 | -24.4 C (-11.9 F) |
| 1942 | -30.0 C (-22.0 F) |
| 1943 | -35.0 C (-31.0 F) |
| 1944 | -22.2 C (-8.0 F) |
| 1945 | -23.9 C (-11.0 F) |
| 1946 | -23.9 C (-11.0 F) |
| 1947 | -32.8 C (-27.0 F) |
| 1948 | -31.7 C (-25.1 F) |
| 1949 | -35.0 C (-31.0 F) |
| 1950 | -37.2 C (-35.0 F) |
| 1951 | -32.8 C (-27.0 F) |
| 1952 | -28.9 C (-20.0 F) |
| 1953 | -21.7 C (-7.1 F) |
| 1954 | -26.1 C (-15.0 F) |
| 1955 | -28.9 C (-20.0 F) |
| 1956 | -34.4 C (-29.9 F) |
| 1957 | -31.1 C (-24.0 F) |
| 1958 | -21.1 C (-6.0 F) |
| 1959 | -27.8 C (-18.0 F) |
| 1960 | -25.6 C (-14.1 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -28.3 C (-18.9 F) |
| 1964 | -32.2 C (-26.0 F) |
| 1965 | -22.2 C (-8.0 F) |
| 1966 | -22.8 C (-9.0 F) |
| 1967 | -25.0 C (-13.0 F) |
| 1968 | -22.8 C (-9.0 F) |
| 1969 | -23.3 C (-9.9 F) |
| 1970 | -23.3 C (-9.9 F) |
| 1971 | -28.3 C (-18.9 F) |
| 1972 | -29.4 C (-20.9 F) |
| 1973 | -20.0 C (-4.0 F) |
| 1974 | -27.8 C (-18.0 F) |
| 1975 | -23.3 C (-9.9 F) |
| 1976 | -24.4 C (-11.9 F) |
| 1977 | -23.3 C (-9.9 F) |
| 1978 | -30.6 C (-23.1 F) |
| 1979 | -31.1 C (-24.0 F) |
| 1980 | -27.8 C (-18.0 F) |
| 1981 | -20.6 C (-5.1 F) |
| 1982 | -30.6 C (-23.1 F) |
| 1983 | -32.8 C (-27.0 F) |
| 1984 | -28.9 C (-20.0 F) |
| 1985 | -28.9 C (-20.0 F) |
| 1986 | -19.4 C (-2.9 F) |
| 1987 | -25.0 C (-13.0 F) |
| 1988 | -26.7 C (-16.1 F) |
| 1989 | -31.1 C (-24.0 F) |
| 1990 | -35.6 C (-32.1 F) |
| 1991 | -21.7 C (-7.1 F) |
| 1992 | -25.6 C (-14.1 F) |
| 1993 | -25.0 C (-13.0 F) |
| 1994 | -23.3 C (-9.9 F) |
| 1995 | -22.2 C (-8.0 F) |
| 1996 | -30.6 C (-23.1 F) |
| 1997 | -22.8 C (-9.0 F) |
| 1998 | -23.9 C (-11.0 F) |
| 1999 | -20.0 C (-4.0 F) |
| 2000 | -20.6 C (-5.1 F) |
| 2001 | -21.7 C (-7.1 F) |
| 2002 | -25.0 C (-13.0 F) |
| 2003 | -17.8 C (0.0 F) |
| 2004 | -27.8 C (-18.0 F) |
| 2005 | -22.8 C (-9.0 F) |
| 2006 | -22.2 C (-8.0 F) |
| 2007 | -22.8 C (-9.0 F) |
| 2008 | -26.1 C (-15.0 F) |
| 2009 | -24.4 C (-11.9 F) |
| 2010 | -26.1 C (-15.0 F) |
| 2011 | -27.2 C (-17.0 F) |
| 2012 | -18.9 C (-2.0 F) |
| 2013 | -25.6 C (-14.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1894 | 37.1 mm (1.5 in) |
| 1895 | 30.0 mm (1.2 in) |
| 1896 | 39.9 mm (1.6 in) |
| 1897 | 35.3 mm (1.4 in) |
| 1898 | 18.3 mm (0.7 in) |
| 1899 | 48.3 mm (1.9 in) |
| 1900 | 71.1 mm (2.8 in) |
| 1901 | 51.8 mm (2.0 in) |
| 1902 | 50.8 mm (2.0 in) |
| 1903 | 9.9 mm (0.39 in) |
| 1904 | 21.1 mm (0.8 in) |
| 1905 | 21.8 mm (0.9 in) |
| 1909 | 47.0 mm (1.9 in) |
| 1910 | 25.9 mm (1.0 in) |
| 1911 | 25.4 mm (1.0 in) |
| 1912 | 40.6 mm (1.6 in) |
| 1913 | 39.6 mm (1.6 in) |
| 1914 | 45.7 mm (1.8 in) |
| 1915 | 27.9 mm (1.1 in) |
| 1916 | 50.8 mm (2.0 in) |
| 1917 | 33.0 mm (1.3 in) |
| 1918 | 22.1 mm (0.9 in) |
| 1919 | 27.7 mm (1.1 in) |
| 1920 | 50.8 mm (2.0 in) |
| 1921 | 63.5 mm (2.5 in) |
| 1922 | 23.9 mm (0.9 in) |
| 1923 | 40.1 mm (1.6 in) |
| 1924 | 40.1 mm (1.6 in) |
| 1925 | 31.8 mm (1.3 in) |
| 1926 | 35.6 mm (1.4 in) |
| 1927 | 62.5 mm (2.5 in) |
| 1928 | 60.5 mm (2.4 in) |
| 1929 | 115.6 mm (4.6 in) |
| 1930 | 48.3 mm (1.9 in) |
| 1931 | 65.8 mm (2.6 in) |
| 1932 | 57.2 mm (2.3 in) |
| 1933 | 46.5 mm (1.8 in) |
| 1934 | 40.4 mm (1.6 in) |
| 1935 | 21.8 mm (0.9 in) |
| 1936 | 41.4 mm (1.6 in) |
| 1937 | 29.2 mm (1.1 in) |
| 1938 | 41.9 mm (1.6 in) |
| 1939 | 24.9 mm (1.0 in) |
| 1940 | 26.7 mm (1.1 in) |
| 1941 | 40.6 mm (1.6 in) |
| 1942 | 26.7 mm (1.1 in) |
| 1943 | 54.6 mm (2.1 in) |
| 1944 | 23.4 mm (0.9 in) |
| 1945 | 39.1 mm (1.5 in) |
| 1946 | 33.0 mm (1.3 in) |
| 1947 | 47.0 mm (1.9 in) |
| 1948 | 37.3 mm (1.5 in) |
| 1949 | 48.8 mm (1.9 in) |
| 1950 | 41.1 mm (1.6 in) |
| 1951 | 30.5 mm (1.2 in) |
| 1952 | 19.3 mm (0.8 in) |
| 1953 | 44.5 mm (1.8 in) |
| 1954 | 34.0 mm (1.3 in) |
| 1955 | 54.6 mm (2.1 in) |
| 1956 | 36.6 mm (1.4 in) |
| 1957 | 34.5 mm (1.4 in) |
| 1958 | 66.3 mm (2.6 in) |
| 1959 | 26.9 mm (1.1 in) |
| 1960 | 24.4 mm (1.0 in) |
| 1961 | 32.5 mm (1.3 in) |
| 1962 | 24.9 mm (1.0 in) |
| 1963 | 53.1 mm (2.1 in) |
| 1964 | 46.7 mm (1.8 in) |
| 1965 | 35.1 mm (1.4 in) |
| 1966 | 23.9 mm (0.9 in) |
| 1967 | 29.5 mm (1.2 in) |
| 1968 | 33.8 mm (1.3 in) |
| 1969 | 50.0 mm (2.0 in) |
| 1970 | 39.9 mm (1.6 in) |
| 1971 | 48.8 mm (1.9 in) |
| 1972 | 41.7 mm (1.6 in) |
| 1973 | 21.3 mm (0.8 in) |
| 1974 | 33.5 mm (1.3 in) |
| 1975 | 42.9 mm (1.7 in) |
| 1976 | 33.3 mm (1.3 in) |
| 1977 | 36.1 mm (1.4 in) |
| 1978 | 34.3 mm (1.4 in) |
| 1979 | 35.8 mm (1.4 in) |
| 1980 | 43.7 mm (1.7 in) |
| 1981 | 37.3 mm (1.5 in) |
| 1982 | 45.0 mm (1.8 in) |
| 1983 | 31.8 mm (1.3 in) |
| 1984 | 25.9 mm (1.0 in) |
| 1985 | 29.0 mm (1.1 in) |
| 1986 | 44.5 mm (1.8 in) |
| 1987 | 23.4 mm (0.9 in) |
| 1988 | 29.2 mm (1.1 in) |
| 1989 | 34.5 mm (1.4 in) |
| 1990 | 35.6 mm (1.4 in) |
| 1991 | 30.5 mm (1.2 in) |
| 1992 | 23.4 mm (0.9 in) |
| 1993 | 28.4 mm (1.1 in) |
| 1994 | 17.8 mm (0.7 in) |
| 1995 | 28.2 mm (1.1 in) |
| 1996 | 49.8 mm (2.0 in) |
| 1997 | 29.5 mm (1.2 in) |
| 1998 | 29.5 mm (1.2 in) |
| 1999 | 28.7 mm (1.1 in) |
| 2000 | 32.8 mm (1.3 in) |
| 2001 | 39.4 mm (1.6 in) |
| 2002 | 27.9 mm (1.1 in) |
| 2003 | 28.7 mm (1.1 in) |
| 2004 | 33.0 mm (1.3 in) |
| 2005 | 36.1 mm (1.4 in) |
| 2006 | 32.3 mm (1.3 in) |
| 2007 | 24.1 mm (0.9 in) |
| 2008 | 29.5 mm (1.2 in) |
| 2009 | 33.3 mm (1.3 in) |
| 2010 | 37.6 mm (1.5 in) |
| 2011 | 24.1 mm (0.9 in) |
| 2012 | 53.8 mm (2.1 in) |
| 2013 | 5.3 mm (0.21 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1894 | 82.1 mm (3.2 in) |
| 1895 | 41.9 mm (1.6 in) |
| 1896 | 67.0 mm (2.6 in) |
| 1897 | 65.6 mm (2.6 in) |
| 1898 | 29.7 mm (1.2 in) |
| 1899 | 106.4 mm (4.2 in) |
| 1900 | 71.1 mm (2.8 in) |
| 1901 | 51.8 mm (2.0 in) |
| 1902 | 50.8 mm (2.0 in) |
| 1903 | 18.5 mm (0.7 in) |
| 1904 | 38.2 mm (1.5 in) |
| 1905 | 40.3 mm (1.6 in) |
| 1909 | 132.1 mm (5.2 in) |
| 1910 | 46.2 mm (1.8 in) |
| 1911 | 49.5 mm (1.9 in) |
| 1912 | 53.8 mm (2.1 in) |
| 1913 | 49.8 mm (2.0 in) |
| 1914 | 47.2 mm (1.9 in) |
| 1915 | 60.7 mm (2.4 in) |
| 1916 | 115.8 mm (4.6 in) |
| 1917 | 72.5 mm (2.9 in) |
| 1918 | 37.1 mm (1.5 in) |
| 1919 | 43.1 mm (1.7 in) |
| 1920 | 51.7 mm (2.0 in) |
| 1921 | 144.0 mm (5.7 in) |
| 1922 | 50.3 mm (2.0 in) |
| 1923 | 68.3 mm (2.7 in) |
| 1924 | 71.3 mm (2.8 in) |
| 1925 | 77.6 mm (3.1 in) |
| 1926 | 100.4 mm (4.0 in) |
| 1927 | 97.6 mm (3.8 in) |
| 1928 | 74.5 mm (2.9 in) |
| 1929 | 130.8 mm (5.1 in) |
| 1930 | 55.4 mm (2.2 in) |
| 1931 | 83.1 mm (3.3 in) |
| 1932 | 83.1 mm (3.3 in) |
| 1933 | 69.9 mm (2.8 in) |
| 1934 | 47.5 mm (1.9 in) |
| 1935 | 29.4 mm (1.2 in) |
| 1936 | 58.2 mm (2.3 in) |
| 1937 | 53.9 mm (2.1 in) |
| 1938 | 67.3 mm (2.6 in) |
| 1939 | 38.1 mm (1.5 in) |
| 1940 | 52.9 mm (2.1 in) |
| 1941 | 68.9 mm (2.7 in) |
| 1942 | 59.4 mm (2.3 in) |
| 1943 | 54.6 mm (2.1 in) |
| 1944 | 59.4 mm (2.3 in) |
| 1945 | 60.4 mm (2.4 in) |
| 1946 | 74.3 mm (2.9 in) |
| 1947 | 48.0 mm (1.9 in) |
| 1948 | 67.8 mm (2.7 in) |
| 1949 | 78.5 mm (3.1 in) |
| 1950 | 63.4 mm (2.5 in) |
| 1951 | 71.1 mm (2.8 in) |
| 1952 | 42.5 mm (1.7 in) |
| 1953 | 91.5 mm (3.6 in) |
| 1954 | 59.6 mm (2.3 in) |
| 1955 | 174.4 mm (6.9 in) |
| 1956 | 59.4 mm (2.3 in) |
| 1957 | 77.1 mm (3.0 in) |
| 1958 | 80.3 mm (3.2 in) |
| 1959 | 47.5 mm (1.9 in) |
| 1960 | 67.6 mm (2.7 in) |
| 1961 | 64.5 mm (2.5 in) |
| 1962 | 62.5 mm (2.5 in) |
| 1963 | 117.8 mm (4.6 in) |
| 1964 | 127.4 mm (5.0 in) |
| 1965 | 100.0 mm (3.9 in) |
| 1966 | 75.9 mm (3.0 in) |
| 1967 | 72.4 mm (2.9 in) |
| 1968 | 93.3 mm (3.7 in) |
| 1969 | 117.8 mm (4.6 in) |
| 1970 | 87.2 mm (3.4 in) |
| 1971 | 82.1 mm (3.2 in) |
| 1972 | 100.6 mm (4.0 in) |
| 1973 | 53.1 mm (2.1 in) |
| 1974 | 52.6 mm (2.1 in) |
| 1975 | 60.4 mm (2.4 in) |
| 1976 | 58.9 mm (2.3 in) |
| 1977 | 88.4 mm (3.5 in) |
| 1978 | 55.1 mm (2.2 in) |
| 1979 | 84.1 mm (3.3 in) |
| 1980 | 96.5 mm (3.8 in) |
| 1981 | 74.2 mm (2.9 in) |
| 1982 | 99.8 mm (3.9 in) |
| 1983 | 65.0 mm (2.6 in) |
| 1984 | 56.7 mm (2.2 in) |
| 1985 | 65.1 mm (2.6 in) |
| 1986 | 98.0 mm (3.9 in) |
| 1987 | 36.9 mm (1.5 in) |
| 1988 | 53.3 mm (2.1 in) |
| 1989 | 62.5 mm (2.5 in) |
| 1990 | 61.9 mm (2.4 in) |
| 1991 | 68.4 mm (2.7 in) |
| 1992 | 54.4 mm (2.1 in) |
| 1993 | 58.0 mm (2.3 in) |
| 1994 | 37.6 mm (1.5 in) |
| 1995 | 53.3 mm (2.1 in) |
| 1996 | 124.2 mm (4.9 in) |
| 1997 | 108.5 mm (4.3 in) |
| 1998 | 65.7 mm (2.6 in) |
| 1999 | 52.8 mm (2.1 in) |
| 2000 | 59.5 mm (2.3 in) |
| 2001 | 56.6 mm (2.2 in) |
| 2002 | 55.6 mm (2.2 in) |
| 2003 | 51.4 mm (2.0 in) |
| 2004 | 71.0 mm (2.8 in) |
| 2005 | 67.4 mm (2.7 in) |
| 2006 | 64.1 mm (2.5 in) |
| 2007 | 48.5 mm (1.9 in) |
| 2008 | 69.3 mm (2.7 in) |
| 2009 | 50.7 mm (2.0 in) |
| 2010 | 57.5 mm (2.3 in) |
| 2011 | 64.8 mm (2.6 in) |
| 2012 | 124.1 mm (4.9 in) |
| 2013 | 0.5 mm (0.02 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1894 | 36 days |
| 1895 | 42 days |
| 1896 | 35 days |
| 1897 | 67 days |
| 1898 | 79 days |
| 1899 | 59 days |
| 1900 | 79 days |
| 1901 | 53 days |
| 1902 | 58 days |
| 1903 | 24 days |
| 1904 | 42 days |
| 1905 | 136 days |
| 1909 | 28 days |
| 1910 | 19 days |
| 1911 | 19 days |
| 1912 | 17 days |
| 1913 | 17 days |
| 1914 | 58 days |
| 1915 | 31 days |
| 1916 | 31 days |
| 1917 | 65 days |
| 1918 | 27 days |
| 1919 | 31 days |
| 1920 | 39 days |
| 1921 | 30 days |
| 1922 | 42 days |
| 1923 | 34 days |
| 1924 | 72 days |
| 1925 | 34 days |
| 1926 | 67 days |
| 1927 | 46 days |
| 1928 | 114 days |
| 1929 | 29 days |
| 1930 | 65 days |
| 1931 | 83 days |
| 1932 | 40 days |
| 1933 | 106 days |
| 1934 | 55 days |
| 1935 | 97 days |
| 1936 | 91 days |
| 1937 | 40 days |
| 1938 | 27 days |
| 1939 | 45 days |
| 1940 | 39 days |
| 1941 | 28 days |
| 1942 | 95 days |
| 1943 | 48 days |
| 1944 | 74 days |
| 1945 | 53 days |
| 1946 | 32 days |
| 1947 | 65 days |
| 1948 | 53 days |
| 1949 | 66 days |
| 1950 | 32 days |
| 1951 | 33 days |
| 1952 | 108 days |
| 1953 | 51 days |
| 1954 | 34 days |
| 1955 | 51 days |
| 1956 | 65 days |
| 1957 | 76 days |
| 1958 | 40 days |
| 1959 | 55 days |
| 1960 | 65 days |
| 1961 | 38 days |
| 1962 | 37 days |
| 1963 | 40 days |
| 1964 | 29 days |
| 1965 | 33 days |
| 1966 | 81 days |
| 1967 | 80 days |
| 1968 | 50 days |
| 1969 | 75 days |
| 1970 | 26 days |
| 1971 | 49 days |
| 1972 | 50 days |
| 1973 | 34 days |
| 1974 | 49 days |
| 1975 | 43 days |
| 1976 | 35 days |
| 1977 | 48 days |
| 1978 | 53 days |
| 1979 | 33 days |
| 1980 | 30 days |
| 1981 | 44 days |
| 1982 | 32 days |
| 1983 | 37 days |
| 1984 | 30 days |
| 1985 | 33 days |
| 1986 | 32 days |
| 1987 | 78 days |
| 1988 | 85 days |
| 1989 | 45 days |
| 1990 | 39 days |
| 1991 | 45 days |
| 1992 | 43 days |
| 1993 | 36 days |
| 1994 | 41 days |
| 1995 | 31 days |
| 1996 | 28 days |
| 1997 | 24 days |
| 1998 | 35 days |
| 1999 | 111 days |
| 2000 | 43 days |
| 2001 | 36 days |
| 2002 | 43 days |
| 2003 | 34 days |
| 2004 | 29 days |
| 2005 | 40 days |
| 2006 | 76 days |
| 2007 | 81 days |
| 2008 | 57 days |
| 2009 | 29 days |
| 2010 | 35 days |
| 2011 | 27 days |
| 2012 | 70 days |
| 2013 | 12 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
85 years with a frostAcross 85 years with a frost, the median last spring frost at Idaho City falls on 20 June and the median first autumn frost on 24 August, which leaves a median of 63 days between them.
In 1977 to 2012 the median growing season was 75 days. That is 14 days more than in 1895 to 1950.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1895 to 1950) | Recent period (1977 to 2012) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 June | 22 June | 19 June | 3 days earlier | -0.1 days per decade |
| First autumn frost | 24 August | 17 August | 2 September | 16 days later | +1.4 days per decade |
| Growing days | 63 days | 61 days | 75 days | 14 days more | +1.5 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
88 years, 1895 to 2010A day with at least 34.7 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 70.4 mm (2.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 34.7 mm (1.4 in) | |
| 5 years | 44.3 mm (1.7 in) | |
| 10 years | 50.7 mm (2.0 in) | |
| 25 years | 58.7 mm (2.3 in) | |
| 50 years | 64.6 mm (2.5 in) | |
| 100 years | 70.4 mm (2.8 in) | Longer than the 88 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 88 years of values from 1895 to 2010.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 66.3 mm (2.6 in) in 1958; 65.8 mm (2.6 in) in 1931; 62.5 mm (2.5 in) in 1927.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Idaho City, at 1928. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1928 ran 0.6 C (1.1 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1928 | -0.6 | -1.1 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).