Frederick Weather Records (USC00343353)
Record envelope, standing records and threshold days for Frederick (USC00343353), Oklahoma, United States, with 108 years of record.
Key Facts for Frederick
- Frederick (USC00343353) is a weather station in Oklahoma, United States at 34.39 latitude and -99.02 longitude, 392 m (1,285 ft) above sea level.
- The station reports from 1904 to 2011, 108 years of record.
- 1,464 records set at Frederick still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Frederick set a daily record precipitation of 51.1 mm (2.0 in) on 1 February 2011.
About the Station
- Location: Oklahoma, United States, 34.39 latitude, -99.02 longitude.
- Elevation: 392 m (1,285 ft).
- Period of record: 1904 to 2011, 108 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 | 32.2 C (90.0 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Feb | 33.9 C (93.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Mar | 40.0 C (104.0 F) | -16.1 C (3.0 F) | n/a | n/a |
| Apr | 39.4 C (102.9 F) | -5.0 C (23.0 F) | n/a | n/a |
| May | 43.9 C (111.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Jun | 46.1 C (115.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Jul | 45.6 C (114.1 F) | 11.1 C (52.0 F) | n/a | n/a |
| Aug | 47.2 C (117.0 F) | 8.9 C (48.0 F) | n/a | n/a |
| Sep | 43.9 C (111.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Oct | 40.0 C (104.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Nov | 33.9 C (93.0 F) | -12.8 C (9.0 F) | n/a | n/a |
| Dec | 30.0 C (86.0 F) | -18.9 C (-2.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1904 | 9 |
| 1905 | 7 |
| 1907 | 9 |
| 1908 | 6 |
| 1909 | 10 |
| 1910 | 19 |
| 1911 | 38 |
| 1912 | 16 |
| 1913 | 14 |
| 1914 | 18 |
| 1915 | 18 |
| 1916 | 12 |
| 1917 | 22 |
| 1918 | 19 |
| 1919 | 18 |
| 1920 | 18 |
| 1921 | 14 |
| 1922 | 11 |
| 1923 | 15 |
| 1924 | 17 |
| 1925 | 16 |
| 1926 | 10 |
| 1927 | 13 |
| 1928 | 15 |
| 1929 | 22 |
| 1930 | 12 |
| 1931 | 14 |
| 1932 | 20 |
| 1933 | 8 |
| 1934 | 11 |
| 1935 | 16 |
| 1936 | 16 |
| 1937 | 13 |
| 1938 | 14 |
| 1939 | 21 |
| 1940 | 12 |
| 1941 | 5 |
| 1942 | 4 |
| 1943 | 25 |
| 1944 | 11 |
| 1945 | 11 |
| 1946 | 14 |
| 1947 | 22 |
| 1948 | 17 |
| 1949 | 11 |
| 1950 | 14 |
| 1951 | 28 |
| 1952 | 23 |
| 1953 | 26 |
| 1954 | 30 |
| 1955 | 19 |
| 1956 | 24 |
| 1957 | 11 |
| 1958 | 12 |
| 1959 | 16 |
| 1960 | 11 |
| 1961 | 6 |
| 1962 | 16 |
| 1963 | 17 |
| 1964 | 11 |
| 1965 | 19 |
| 1966 | 25 |
| 1967 | 14 |
| 1968 | 11 |
| 1969 | 11 |
| 1970 | 17 |
| 1971 | 15 |
| 1972 | 15 |
| 1973 | 7 |
| 1974 | 19 |
| 1975 | 7 |
| 1976 | 17 |
| 1977 | 6 |
| 1978 | 12 |
| 1979 | 15 |
| 1980 | 21 |
| 1981 | 9 |
| 1982 | 9 |
| 1983 | 24 |
| 1984 | 6 |
| 1985 | 17 |
| 1986 | 15 |
| 1987 | 8 |
| 1988 | 6 |
| 1989 | 24 |
| 1990 | 18 |
| 1991 | 13 |
| 1992 | 14 |
| 1993 | 12 |
| 1994 | 4 |
| 1995 | 16 |
| 1996 | 7 |
| 1997 | 13 |
| 1998 | 7 |
| 1999 | 5 |
| 2000 | 14 |
| 2001 | 9 |
| 2002 | 5 |
| 2003 | 10 |
| 2004 | 7 |
| 2005 | 9 |
| 2006 | 10 |
| 2007 | 6 |
| 2008 | 6 |
| 2009 | 3 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1938-04-08 | Record snow depth | Record snow depth 20.3 cm (8.0 in) |
| 1942-03-01 | Record daily snowfall | Record daily snowfall 25.9 cm (10.2 in) |
| 1942-03-01 | Record snow depth | Record snow depth 25.4 cm (10.0 in) |
| 1943-08-03 | Record high maximum temperature | Record high maximum temperature 47.2 C (117.0 F) |
| 1954-12-29 | Record snow depth | Record snow depth 27.9 cm (11.0 in) |
| 1969-09-22 | Record daily precipitation | Record daily precipitation 149.9 mm (5.9 in) |
| 1975-06-22 | Record daily precipitation | Record daily precipitation 162.3 mm (6.4 in) |
| 1983-12-25 | Record low maximum temperature | Record low maximum temperature -13.9 C (7.0 F) |
Wettest Day of Each Month
Jun: 162.3 mm (6.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 51.6 mm (2.0 in) | 8 January 1939 |
| Feb | 64.8 mm (2.6 in) | 18 February 1911 |
| Mar | 72.4 mm (2.9 in) | 30 March 1953 |
| Apr | 105.4 mm (4.1 in) | 8 April 2008 |
| May | 125.7 mm (4.9 in) | 8 May 1922 |
| Jun | 162.3 mm (6.4 in) | 22 June 1975 |
| Jul | 87.6 mm (3.4 in) | 20 July 1915 |
| Aug | 91.2 mm (3.6 in) | 28 August 1977 |
| Sep | 149.9 mm (5.9 in) | 22 September 1969 |
| Oct | 110.5 mm (4.4 in) | 22 October 2000 |
| Nov | 58.4 mm (2.3 in) | 27 November 1919 |
| Dec | 77.7 mm (3.1 in) | 23 December 1932 |
Period of Record Coverage
1904 to 2010| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1904 | 244 | 67% | No |
| 1905 | 187 | 51% | No |
| 1906 | 71 | 19% | No |
| 1907 | 197 | 54% | No |
| 1908 | 234 | 64% | No |
| 1909 | 213 | 58% | No |
| 1910 | 359 | 98% | Yes |
| 1911 | 353 | 97% | Yes |
| 1912 | 366 | 100% | Yes |
| 1913 | 360 | 99% | Yes |
| 1914 | 363 | 99% | Yes |
| 1915 | 362 | 99% | Yes |
| 1916 | 319 | 87% | No |
| 1917 | 362 | 99% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 349 | 96% | Yes |
| 1920 | 348 | 95% | Yes |
| 1921 | 348 | 95% | Yes |
| 1922 | 347 | 95% | Yes |
| 1923 | 349 | 96% | Yes |
| 1924 | 320 | 87% | No |
| 1925 | 316 | 87% | No |
| 1926 | 297 | 81% | No |
| 1927 | 343 | 94% | Yes |
| 1928 | 355 | 97% | Yes |
| 1929 | 361 | 99% | Yes |
| 1930 | 361 | 99% | Yes |
| 1931 | 359 | 98% | Yes |
| 1932 | 360 | 98% | Yes |
| 1933 | 307 | 84% | No |
| 1934 | 359 | 98% | Yes |
| 1935 | 363 | 99% | Yes |
| 1936 | 359 | 98% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 360 | 99% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 362 | 99% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 360 | 98% | Yes |
| 1945 | 360 | 99% | Yes |
| 1946 | 348 | 95% | Yes |
| 1947 | 342 | 94% | Yes |
| 1948 | 346 | 95% | Yes |
| 1949 | 363 | 99% | Yes |
| 1950 | 331 | 91% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 342 | 93% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 360 | 99% | Yes |
| 1963 | 352 | 96% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 362 | 99% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 355 | 97% | Yes |
| 1984 | 333 | 91% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 361 | 99% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 353 | 96% | Yes |
| 1989 | 357 | 98% | Yes |
| 1990 | 329 | 90% | Yes |
| 1991 | 354 | 97% | Yes |
| 1992 | 332 | 91% | Yes |
| 1993 | 358 | 98% | Yes |
| 1994 | 337 | 92% | Yes |
| 1995 | 343 | 94% | Yes |
| 1996 | 225 | 61% | No |
| 1997 | 261 | 72% | No |
| 1998 | 286 | 78% | No |
| 1999 | 334 | 92% | Yes |
| 2000 | 295 | 81% | No |
| 2001 | 328 | 90% | No |
| 2002 | 325 | 89% | No |
| 2003 | 325 | 89% | No |
| 2004 | 330 | 90% | Yes |
| 2005 | 252 | 69% | No |
| 2006 | 297 | 81% | No |
| 2007 | 287 | 79% | No |
| 2008 | 282 | 77% | No |
| 2009 | 285 | 78% | No |
| 2010 | 132 | 36% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 1 February 2011 | Frederick, US | daily rain | 51.1 mm (2.0 in) | 16.0 mm (0.6 in) | 28 years | 34 of 100 (Routine) |
| 18 April 2010 | Frederick, US | daily rain | 30.5 mm (1.2 in) | 11.7 mm (0.5 in) | 31 years | 26 of 100 (Routine) |
| 20 March 2010 | Frederick, US | daily low max (Tie) | 5.0 C (41.0 F) | tie | 83 years | 8 of 100 (Routine) |
| 12 February 2010 | Frederick, US | daily snowfall (Tie) | 7.6 cm (3.0 in) | tie | 38 years | 5 of 100 (Routine) |
| 12 February 2010 | Frederick, US | daily snow depth (Tie) | 7.6 cm (3.0 in) | tie | 38 years | 5 of 100 (Routine) |
| 10 May 2009 | Frederick, US | daily low max (Tie) | 15.6 C (60.1 F) | tie | 55 years | 6 of 100 (Routine) |
| 2 May 2009 | Frederick, US | daily low max (Tie) | 12.8 C (55.0 F) | tie | 19 years | 3 of 100 (Routine) |
| 30 April 2009 | Frederick, US | daily rain | 88.1 mm (3.5 in) | 33.5 mm (1.3 in) | 35 years | 43 of 100 (Notable) |
| 29 April 2009 | Frederick, US | daily rain | 71.1 mm (2.8 in) | 25.4 mm (1.0 in) | 16 years | 31 of 100 (Routine) |
| 12 March 2009 | Frederick, US | daily low max | 3.3 C (37.9 F) | 0.6 C (1.1 F) | 11 years | 13 of 100 (Routine) |
| 27 February 2009 | Frederick, US | daily high max (Tie) | 31.1 C (88.0 F) | tie | 91 years | 9 of 100 (Routine) |
| 26 February 2009 | Frederick, US | daily high max | 30.0 C (86.0 F) | 0.6 C (1.1 F) | 102 years | 40 of 100 (Notable) |
| 9 January 2009 | Frederick, US | daily high max | 26.7 C (80.1 F) | 1.1 C (2.0 F) | 52 years | 26 of 100 (Routine) |
| 26 December 2008 | Frederick, US | daily high max | 24.4 C (75.9 F) | 0.5 C (0.9 F) | 3 years | 10 of 100 (Routine) |
| 13 October 2008 | Frederick, US | daily rain | 80.0 mm (3.1 in) | 22.6 mm (0.9 in) | 85 years | 46 of 100 (Notable) |
| 9 September 2008 | Frederick, US | daily low max (Tie) | 22.2 C (72.0 F) | tie | 67 years | 7 of 100 (Routine) |
| 18 August 2008 | Frederick, US | daily low max | 22.2 C (72.0 F) | 1.7 C (3.1 F) | 16 years | 18 of 100 (Routine) |
| 16 August 2008 | Frederick, US | daily low max | 24.4 C (75.9 F) | 2.3 C (4.1 F) | 66 years | 34 of 100 (Routine) |
| 13 June 2008 | Frederick, US | daily high min (Tie) | 25.6 C (78.1 F) | tie | 50 years | 6 of 100 (Routine) |
| 12 June 2008 | Frederick, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 79 years | 36 of 100 (Notable) |
Climate Trend
80 complete years, 1910 to 2006| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1910 | 17.7 C | +0.39 C |
| 1911 | 18.1 C | +0.82 C |
| 1912 | 16.0 C | -1.26 C |
| 1913 | 16.8 C | -0.53 C |
| 1914 | 17.3 C | 0.00 C |
| 1915 | 16.7 C | -0.58 C |
| 1917 | 16.8 C | -0.46 C |
| 1918 | 17.4 C | +0.13 C |
| 1919 | 16.1 C | -1.18 C |
| 1921 | 18.8 C | +1.47 C |
| 1922 | 17.8 C | +0.45 C |
| 1923 | 17.3 C | -0.01 C |
| 1927 | 17.2 C | -0.09 C |
| 1928 | 17.4 C | +0.06 C |
| 1929 | 16.8 C | -0.52 C |
| 1930 | 17.6 C | +0.29 C |
| 1931 | 17.5 C | +0.23 C |
| 1932 | 16.6 C | -0.74 C |
| 1934 | 18.1 C | +0.81 C |
| 1935 | 16.7 C | -0.64 C |
| 1936 | 17.4 C | +0.11 C |
| 1937 | 17.2 C | -0.08 C |
| 1938 | 18.7 C | +1.36 C |
| 1939 | 18.8 C | +1.51 C |
| 1940 | 17.2 C | -0.14 C |
| 1941 | 17.4 C | +0.05 C |
| 1942 | 17.3 C | -0.04 C |
| 1943 | 18.1 C | +0.82 C |
| 1944 | 18.0 C | +0.66 C |
| 1945 | 17.3 C | +0.03 C |
| 1946 | 17.1 C | -0.19 C |
| 1949 | 16.6 C | -0.68 C |
| 1951 | 18.3 C | +1.01 C |
| 1952 | 18.9 C | +1.60 C |
| 1953 | 18.8 C | +1.52 C |
| 1954 | 19.5 C | +2.17 C |
| 1955 | 18.3 C | +0.99 C |
| 1956 | 19.4 C | +2.14 C |
| 1957 | 17.4 C | +0.12 C |
| 1958 | 17.5 C | +0.21 C |
| 1959 | 18.1 C | +0.79 C |
| 1960 | 17.5 C | +0.22 C |
| 1961 | 17.3 C | -0.04 C |
| 1962 | 18.2 C | +0.89 C |
| 1963 | 18.6 C | +1.31 C |
| 1964 | 17.9 C | +0.64 C |
| 1965 | 17.9 C | +0.59 C |
| 1966 | 17.1 C | -0.17 C |
| 1967 | 17.7 C | +0.38 C |
| 1968 | 16.5 C | -0.83 C |
| 1969 | 17.3 C | +0.04 C |
| 1970 | 17.7 C | +0.36 C |
| 1971 | 17.6 C | +0.31 C |
| 1972 | 17.2 C | -0.09 C |
| 1973 | 16.9 C | -0.38 C |
| 1974 | 17.6 C | +0.32 C |
| 1975 | 16.7 C | -0.56 C |
| 1976 | 17.0 C | -0.32 C |
| 1977 | 18.2 C | +0.94 C |
| 1978 | 16.0 C | -1.33 C |
| 1979 | 15.6 C | -1.73 C |
| 1980 | 17.7 C | +0.44 C |
| 1981 | 17.1 C | -0.21 C |
| 1982 | 16.4 C | -0.95 C |
| 1983 | 16.1 C | -1.23 C |
| 1985 | 16.6 C | -0.66 C |
| 1986 | 17.2 C | -0.06 C |
| 1987 | 16.4 C | -0.86 C |
| 1988 | 16.4 C | -0.93 C |
| 1989 | 16.0 C | -1.26 C |
| 1990 | 16.5 C | -0.79 C |
| 1991 | 16.2 C | -1.07 C |
| 1993 | 15.2 C | -2.11 C |
| 1995 | 16.5 C | -0.79 C |
| 1999 | 17.6 C | +0.26 C |
| 2001 | 16.8 C | -0.48 C |
| 2002 | 16.0 C | -1.31 C |
| 2003 | 16.6 C | -0.70 C |
| 2004 | 16.6 C | -0.69 C |
| 2006 | 17.8 C | +0.52 C |
The annual mean temperature here has fallen by 0.09 C (0.02 to 0.16) per decade over 1910 to 2006. In Fahrenheit: 0.17 F (0.04 to 0.29) per decade. The slope is a straight line fitted to 80 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.09 C (-0.16 to -0.02) per decade | -0.17 F (-0.29 to -0.04) per decade | 1910 to 2006 | 80 | Fall |
| Mean daily maximum | -0.14 C (-0.24 to -0.04) per decade | -0.3 F (-0.4 to -0.1) per decade | 1910 to 2006 | 80 | Fall |
| Mean daily minimum | -0.04 C (-0.10 to 0.01) per decade | -0.08 F (-0.18 to 0.02) per decade | 1910 to 2006 | 80 | 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
1904 to 2011| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 47.2 C (117.0 F) | 1943 | 42.2 C (108.0 F) | 107 |
| Coldest night (TNn) | -22.2 C (-8.0 F) | 1911 | -13.3 C (8.1 F) | 107 |
| Wettest day (Rx1day) | 162.3 mm (6.4 in) | 1975 | 66.2 mm (2.6 in) | 108 |
| Wettest five days (Rx5day) | 271.0 mm (10.7 in) | 2000 | 101.0 mm (4.0 in) | 107 |
| Longest dry spell (CDD) | 142 days | 1905 | 38 days | 108 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1904 | 40.0 C (104.0 F) |
| 1905 | 42.2 C (108.0 F) |
| 1906 | 36.1 C (97.0 F) |
| 1907 | 46.1 C (115.0 F) |
| 1908 | 39.4 C (102.9 F) |
| 1909 | 42.2 C (108.0 F) |
| 1910 | 42.2 C (108.0 F) |
| 1911 | 43.9 C (111.0 F) |
| 1912 | 42.8 C (109.0 F) |
| 1913 | 42.2 C (108.0 F) |
| 1914 | 44.4 C (111.9 F) |
| 1915 | 39.4 C (102.9 F) |
| 1916 | 42.8 C (109.0 F) |
| 1917 | 42.2 C (108.0 F) |
| 1918 | 42.8 C (109.0 F) |
| 1919 | 40.6 C (105.1 F) |
| 1920 | 40.6 C (105.1 F) |
| 1921 | 41.1 C (106.0 F) |
| 1922 | 44.4 C (111.9 F) |
| 1923 | 41.1 C (106.0 F) |
| 1924 | 43.9 C (111.0 F) |
| 1925 | 42.8 C (109.0 F) |
| 1926 | 40.0 C (104.0 F) |
| 1927 | 40.0 C (104.0 F) |
| 1928 | 41.7 C (107.1 F) |
| 1929 | 41.7 C (107.1 F) |
| 1930 | 42.8 C (109.0 F) |
| 1931 | 41.1 C (106.0 F) |
| 1932 | 38.9 C (102.0 F) |
| 1933 | 41.1 C (106.0 F) |
| 1934 | 42.8 C (109.0 F) |
| 1935 | 42.2 C (108.0 F) |
| 1936 | 45.6 C (114.1 F) |
| 1937 | 42.8 C (109.0 F) |
| 1938 | 40.6 C (105.1 F) |
| 1939 | 43.9 C (111.0 F) |
| 1940 | 43.3 C (109.9 F) |
| 1941 | 40.6 C (105.1 F) |
| 1942 | 40.6 C (105.1 F) |
| 1943 | 47.2 C (117.0 F) |
| 1944 | 44.4 C (111.9 F) |
| 1945 | 43.3 C (109.9 F) |
| 1946 | 41.1 C (106.0 F) |
| 1947 | 43.9 C (111.0 F) |
| 1948 | 41.7 C (107.1 F) |
| 1949 | 41.1 C (106.0 F) |
| 1950 | 37.8 C (100.0 F) |
| 1951 | 45.6 C (114.1 F) |
| 1952 | 43.9 C (111.0 F) |
| 1953 | 45.6 C (114.1 F) |
| 1954 | 45.0 C (113.0 F) |
| 1955 | 41.1 C (106.0 F) |
| 1956 | 43.9 C (111.0 F) |
| 1957 | 42.8 C (109.0 F) |
| 1958 | 44.4 C (111.9 F) |
| 1959 | 42.2 C (108.0 F) |
| 1960 | 42.8 C (109.0 F) |
| 1961 | 41.1 C (106.0 F) |
| 1962 | 44.4 C (111.9 F) |
| 1963 | 43.3 C (109.9 F) |
| 1964 | 46.1 C (115.0 F) |
| 1965 | 41.7 C (107.1 F) |
| 1966 | 43.9 C (111.0 F) |
| 1967 | 41.7 C (107.1 F) |
| 1968 | 40.6 C (105.1 F) |
| 1969 | 45.6 C (114.1 F) |
| 1970 | 45.6 C (114.1 F) |
| 1971 | 42.2 C (108.0 F) |
| 1972 | 43.9 C (111.0 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 43.9 C (111.0 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 41.7 C (107.1 F) |
| 1977 | 41.1 C (106.0 F) |
| 1978 | 42.8 C (109.0 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 45.0 C (113.0 F) |
| 1981 | 43.3 C (109.9 F) |
| 1982 | 41.7 C (107.1 F) |
| 1983 | 42.2 C (108.0 F) |
| 1984 | 42.8 C (109.0 F) |
| 1985 | 42.2 C (108.0 F) |
| 1986 | 42.8 C (109.0 F) |
| 1987 | 38.3 C (100.9 F) |
| 1988 | 43.3 C (109.9 F) |
| 1989 | 42.2 C (108.0 F) |
| 1990 | 40.0 C (104.0 F) |
| 1991 | 38.9 C (102.0 F) |
| 1992 | 38.3 C (100.9 F) |
| 1993 | 39.4 C (102.9 F) |
| 1994 | 46.1 C (115.0 F) |
| 1995 | 41.7 C (107.1 F) |
| 1996 | 45.6 C (114.1 F) |
| 1997 | 38.9 C (102.0 F) |
| 1998 | 43.3 C (109.9 F) |
| 1999 | 42.2 C (108.0 F) |
| 2000 | 43.9 C (111.0 F) |
| 2001 | 42.2 C (108.0 F) |
| 2002 | 39.4 C (102.9 F) |
| 2003 | 42.2 C (108.0 F) |
| 2004 | 39.4 C (102.9 F) |
| 2005 | 40.0 C (104.0 F) |
| 2006 | 42.2 C (108.0 F) |
| 2007 | 38.3 C (100.9 F) |
| 2008 | 41.1 C (106.0 F) |
| 2009 | 41.1 C (106.0 F) |
| 2010 | 36.1 C (97.0 F) |
| 2011 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1904 | -11.1 C (12.0 F) |
| 1905 | -17.2 C (1.0 F) |
| 1906 | -6.1 C (21.0 F) |
| 1907 | -10.0 C (14.0 F) |
| 1908 | -6.7 C (19.9 F) |
| 1909 | -17.8 C (0.0 F) |
| 1910 | -12.8 C (9.0 F) |
| 1911 | -22.2 C (-8.0 F) |
| 1912 | -20.0 C (-4.0 F) |
| 1913 | -18.3 C (-0.9 F) |
| 1914 | -15.6 C (3.9 F) |
| 1915 | -8.3 C (17.1 F) |
| 1916 | -16.7 C (1.9 F) |
| 1917 | -14.4 C (6.1 F) |
| 1918 | -18.9 C (-2.0 F) |
| 1919 | -15.0 C (5.0 F) |
| 1920 | -11.7 C (10.9 F) |
| 1921 | -11.7 C (10.9 F) |
| 1922 | -13.3 C (8.1 F) |
| 1923 | -12.2 C (10.0 F) |
| 1924 | -17.8 C (0.0 F) |
| 1925 | -12.2 C (10.0 F) |
| 1926 | -12.2 C (10.0 F) |
| 1927 | -13.9 C (7.0 F) |
| 1928 | -15.6 C (3.9 F) |
| 1929 | -16.7 C (1.9 F) |
| 1930 | -21.7 C (-7.1 F) |
| 1931 | -9.4 C (15.1 F) |
| 1932 | -13.3 C (8.1 F) |
| 1933 | -20.6 C (-5.1 F) |
| 1934 | -11.7 C (10.9 F) |
| 1935 | -17.8 C (0.0 F) |
| 1936 | -16.1 C (3.0 F) |
| 1937 | -12.2 C (10.0 F) |
| 1938 | -12.2 C (10.0 F) |
| 1939 | -11.7 C (10.9 F) |
| 1940 | -15.6 C (3.9 F) |
| 1941 | -5.0 C (23.0 F) |
| 1942 | -19.4 C (-2.9 F) |
| 1943 | -17.8 C (0.0 F) |
| 1944 | -13.9 C (7.0 F) |
| 1945 | -11.7 C (10.9 F) |
| 1946 | -11.1 C (12.0 F) |
| 1947 | -21.7 C (-7.1 F) |
| 1948 | -16.1 C (3.0 F) |
| 1949 | -12.2 C (10.0 F) |
| 1950 | -13.9 C (7.0 F) |
| 1951 | -20.0 C (-4.0 F) |
| 1952 | -6.7 C (19.9 F) |
| 1953 | -11.7 C (10.9 F) |
| 1954 | -13.9 C (7.0 F) |
| 1955 | -8.9 C (16.0 F) |
| 1956 | -8.3 C (17.1 F) |
| 1957 | -9.4 C (15.1 F) |
| 1958 | -11.7 C (10.9 F) |
| 1959 | -16.7 C (1.9 F) |
| 1960 | -13.3 C (8.1 F) |
| 1961 | -12.2 C (10.0 F) |
| 1962 | -17.8 C (0.0 F) |
| 1963 | -16.7 C (1.9 F) |
| 1964 | -13.3 C (8.1 F) |
| 1965 | -12.2 C (10.0 F) |
| 1966 | -20.0 C (-4.0 F) |
| 1967 | -12.2 C (10.0 F) |
| 1968 | -15.6 C (3.9 F) |
| 1969 | -10.6 C (12.9 F) |
| 1970 | -11.7 C (10.9 F) |
| 1971 | -15.6 C (3.9 F) |
| 1972 | -15.0 C (5.0 F) |
| 1973 | -16.7 C (1.9 F) |
| 1974 | -13.3 C (8.1 F) |
| 1975 | -12.2 C (10.0 F) |
| 1976 | -14.4 C (6.1 F) |
| 1977 | -16.7 C (1.9 F) |
| 1978 | -15.6 C (3.9 F) |
| 1979 | -15.6 C (3.9 F) |
| 1980 | -13.9 C (7.0 F) |
| 1981 | -15.6 C (3.9 F) |
| 1982 | -17.2 C (1.0 F) |
| 1983 | -18.3 C (-0.9 F) |
| 1984 | -6.7 C (19.9 F) |
| 1985 | -15.0 C (5.0 F) |
| 1986 | -17.8 C (0.0 F) |
| 1987 | -12.2 C (10.0 F) |
| 1988 | -17.2 C (1.0 F) |
| 1989 | -18.9 C (-2.0 F) |
| 1990 | -16.1 C (3.0 F) |
| 1991 | -8.3 C (17.1 F) |
| 1992 | -7.8 C (18.0 F) |
| 1993 | -10.6 C (12.9 F) |
| 1994 | -13.3 C (8.1 F) |
| 1995 | -10.0 C (14.0 F) |
| 1996 | -12.8 C (9.0 F) |
| 1997 | -11.1 C (12.0 F) |
| 1998 | -12.2 C (10.0 F) |
| 1999 | -8.9 C (16.0 F) |
| 2000 | -8.9 C (16.0 F) |
| 2001 | -8.3 C (17.1 F) |
| 2002 | -11.7 C (10.9 F) |
| 2003 | -11.1 C (12.0 F) |
| 2004 | -13.9 C (7.0 F) |
| 2005 | -14.4 C (6.1 F) |
| 2006 | -12.2 C (10.0 F) |
| 2007 | -11.7 C (10.9 F) |
| 2008 | -12.2 C (10.0 F) |
| 2009 | -12.2 C (10.0 F) |
| 2010 | -12.8 C (9.0 F) |
| 2011 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1904 | 58.4 mm (2.3 in) |
| 1905 | 66.0 mm (2.6 in) |
| 1906 | 57.2 mm (2.3 in) |
| 1907 | 101.6 mm (4.0 in) |
| 1908 | 106.7 mm (4.2 in) |
| 1909 | 49.5 mm (1.9 in) |
| 1910 | 39.1 mm (1.5 in) |
| 1911 | 76.2 mm (3.0 in) |
| 1912 | 58.2 mm (2.3 in) |
| 1913 | 66.5 mm (2.6 in) |
| 1914 | 47.0 mm (1.9 in) |
| 1915 | 87.6 mm (3.4 in) |
| 1916 | 37.1 mm (1.5 in) |
| 1917 | 32.8 mm (1.3 in) |
| 1918 | 93.0 mm (3.7 in) |
| 1919 | 90.4 mm (3.6 in) |
| 1920 | 96.5 mm (3.8 in) |
| 1921 | 53.3 mm (2.1 in) |
| 1922 | 125.7 mm (4.9 in) |
| 1923 | 58.4 mm (2.3 in) |
| 1924 | 69.9 mm (2.8 in) |
| 1925 | 59.9 mm (2.4 in) |
| 1926 | 59.2 mm (2.3 in) |
| 1927 | 66.0 mm (2.6 in) |
| 1928 | 36.8 mm (1.4 in) |
| 1929 | 92.7 mm (3.6 in) |
| 1930 | 65.0 mm (2.6 in) |
| 1931 | 48.3 mm (1.9 in) |
| 1932 | 77.7 mm (3.1 in) |
| 1933 | 45.5 mm (1.8 in) |
| 1934 | 50.8 mm (2.0 in) |
| 1935 | 76.2 mm (3.0 in) |
| 1936 | 49.5 mm (1.9 in) |
| 1937 | 48.3 mm (1.9 in) |
| 1938 | 64.3 mm (2.5 in) |
| 1939 | 68.6 mm (2.7 in) |
| 1940 | 37.6 mm (1.5 in) |
| 1941 | 70.6 mm (2.8 in) |
| 1942 | 66.0 mm (2.6 in) |
| 1943 | 31.2 mm (1.2 in) |
| 1944 | 45.7 mm (1.8 in) |
| 1945 | 68.6 mm (2.7 in) |
| 1946 | 58.4 mm (2.3 in) |
| 1947 | 76.2 mm (3.0 in) |
| 1948 | 66.0 mm (2.6 in) |
| 1949 | 48.3 mm (1.9 in) |
| 1950 | 63.5 mm (2.5 in) |
| 1951 | 94.2 mm (3.7 in) |
| 1952 | 73.9 mm (2.9 in) |
| 1953 | 72.4 mm (2.9 in) |
| 1954 | 52.6 mm (2.1 in) |
| 1955 | 103.1 mm (4.1 in) |
| 1956 | 72.6 mm (2.9 in) |
| 1957 | 81.8 mm (3.2 in) |
| 1958 | 45.7 mm (1.8 in) |
| 1959 | 57.2 mm (2.3 in) |
| 1960 | 65.3 mm (2.6 in) |
| 1961 | 70.1 mm (2.8 in) |
| 1962 | 67.8 mm (2.7 in) |
| 1963 | 81.5 mm (3.2 in) |
| 1964 | 49.3 mm (1.9 in) |
| 1965 | 83.3 mm (3.3 in) |
| 1966 | 73.7 mm (2.9 in) |
| 1967 | 47.0 mm (1.9 in) |
| 1968 | 50.8 mm (2.0 in) |
| 1969 | 149.9 mm (5.9 in) |
| 1970 | 66.3 mm (2.6 in) |
| 1971 | 66.3 mm (2.6 in) |
| 1972 | 50.5 mm (2.0 in) |
| 1973 | 68.6 mm (2.7 in) |
| 1974 | 93.5 mm (3.7 in) |
| 1975 | 162.3 mm (6.4 in) |
| 1976 | 75.4 mm (3.0 in) |
| 1977 | 91.2 mm (3.6 in) |
| 1978 | 88.6 mm (3.5 in) |
| 1979 | 61.5 mm (2.4 in) |
| 1980 | 59.4 mm (2.3 in) |
| 1981 | 82.6 mm (3.3 in) |
| 1982 | 66.8 mm (2.6 in) |
| 1983 | 104.1 mm (4.1 in) |
| 1984 | 50.8 mm (2.0 in) |
| 1985 | 101.6 mm (4.0 in) |
| 1986 | 86.4 mm (3.4 in) |
| 1987 | 76.2 mm (3.0 in) |
| 1988 | 96.5 mm (3.8 in) |
| 1989 | 58.4 mm (2.3 in) |
| 1990 | 58.4 mm (2.3 in) |
| 1991 | 73.2 mm (2.9 in) |
| 1992 | 63.5 mm (2.5 in) |
| 1993 | 59.7 mm (2.4 in) |
| 1994 | 55.9 mm (2.2 in) |
| 1995 | 75.4 mm (3.0 in) |
| 1996 | 50.0 mm (2.0 in) |
| 1997 | 68.6 mm (2.7 in) |
| 1998 | 70.4 mm (2.8 in) |
| 1999 | 53.8 mm (2.1 in) |
| 2000 | 110.5 mm (4.4 in) |
| 2001 | 72.4 mm (2.9 in) |
| 2002 | 51.8 mm (2.0 in) |
| 2003 | 44.5 mm (1.8 in) |
| 2004 | 68.8 mm (2.7 in) |
| 2005 | 65.0 mm (2.6 in) |
| 2006 | 73.7 mm (2.9 in) |
| 2007 | 56.9 mm (2.2 in) |
| 2008 | 105.4 mm (4.1 in) |
| 2009 | 88.1 mm (3.5 in) |
| 2010 | 66.0 mm (2.6 in) |
| 2011 | 51.1 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1904 | 94.0 mm (3.7 in) |
| 1905 | 76.2 mm (3.0 in) |
| 1906 | 57.2 mm (2.3 in) |
| 1907 | 108.0 mm (4.3 in) |
| 1908 | 160.0 mm (6.3 in) |
| 1909 | 141.2 mm (5.6 in) |
| 1910 | 41.6 mm (1.6 in) |
| 1911 | 104.5 mm (4.1 in) |
| 1912 | 90.2 mm (3.6 in) |
| 1913 | 122.4 mm (4.8 in) |
| 1914 | 106.2 mm (4.2 in) |
| 1915 | 104.1 mm (4.1 in) |
| 1916 | 74.4 mm (2.9 in) |
| 1917 | 40.9 mm (1.6 in) |
| 1918 | 152.2 mm (6.0 in) |
| 1919 | 210.8 mm (8.3 in) |
| 1920 | 141.2 mm (5.6 in) |
| 1921 | 97.8 mm (3.9 in) |
| 1922 | 158.7 mm (6.2 in) |
| 1923 | 128.6 mm (5.1 in) |
| 1924 | 87.6 mm (3.4 in) |
| 1925 | 155.9 mm (6.1 in) |
| 1926 | 102.9 mm (4.1 in) |
| 1927 | 124.2 mm (4.9 in) |
| 1928 | 93.0 mm (3.7 in) |
| 1929 | 100.3 mm (3.9 in) |
| 1930 | 106.2 mm (4.2 in) |
| 1931 | 127.5 mm (5.0 in) |
| 1932 | 96.2 mm (3.8 in) |
| 1933 | 45.5 mm (1.8 in) |
| 1934 | 76.9 mm (3.0 in) |
| 1935 | 84.3 mm (3.3 in) |
| 1936 | 106.6 mm (4.2 in) |
| 1937 | 96.1 mm (3.8 in) |
| 1938 | 93.8 mm (3.7 in) |
| 1939 | 104.2 mm (4.1 in) |
| 1940 | 52.1 mm (2.1 in) |
| 1941 | 105.8 mm (4.2 in) |
| 1942 | 88.9 mm (3.5 in) |
| 1943 | 70.1 mm (2.8 in) |
| 1944 | 79.2 mm (3.1 in) |
| 1945 | 122.0 mm (4.8 in) |
| 1946 | 99.3 mm (3.9 in) |
| 1947 | 133.6 mm (5.3 in) |
| 1948 | 109.3 mm (4.3 in) |
| 1949 | 85.5 mm (3.4 in) |
| 1950 | 101.0 mm (4.0 in) |
| 1951 | 151.1 mm (5.9 in) |
| 1952 | 120.9 mm (4.8 in) |
| 1953 | 72.4 mm (2.9 in) |
| 1954 | 105.0 mm (4.1 in) |
| 1955 | 168.1 mm (6.6 in) |
| 1956 | 99.1 mm (3.9 in) |
| 1957 | 106.4 mm (4.2 in) |
| 1958 | 95.5 mm (3.8 in) |
| 1959 | 84.3 mm (3.3 in) |
| 1960 | 139.2 mm (5.5 in) |
| 1961 | 70.9 mm (2.8 in) |
| 1962 | 88.6 mm (3.5 in) |
| 1963 | 125.7 mm (4.9 in) |
| 1964 | 74.9 mm (2.9 in) |
| 1965 | 83.3 mm (3.3 in) |
| 1966 | 115.9 mm (4.6 in) |
| 1967 | 93.9 mm (3.7 in) |
| 1968 | 76.8 mm (3.0 in) |
| 1969 | 161.3 mm (6.4 in) |
| 1970 | 67.1 mm (2.6 in) |
| 1971 | 80.7 mm (3.2 in) |
| 1972 | 86.7 mm (3.4 in) |
| 1973 | 84.3 mm (3.3 in) |
| 1974 | 126.1 mm (5.0 in) |
| 1975 | 162.6 mm (6.4 in) |
| 1976 | 124.1 mm (4.9 in) |
| 1977 | 97.0 mm (3.8 in) |
| 1978 | 96.0 mm (3.8 in) |
| 1979 | 75.3 mm (3.0 in) |
| 1980 | 85.6 mm (3.4 in) |
| 1981 | 152.9 mm (6.0 in) |
| 1982 | 92.7 mm (3.6 in) |
| 1983 | 252.5 mm (9.9 in) |
| 1984 | 60.6 mm (2.4 in) |
| 1985 | 130.3 mm (5.1 in) |
| 1986 | 179.6 mm (7.1 in) |
| 1987 | 160.5 mm (6.3 in) |
| 1988 | 104.4 mm (4.1 in) |
| 1989 | 107.2 mm (4.2 in) |
| 1990 | 112.2 mm (4.4 in) |
| 1991 | 138.7 mm (5.5 in) |
| 1992 | 105.0 mm (4.1 in) |
| 1993 | 99.0 mm (3.9 in) |
| 1994 | 61.7 mm (2.4 in) |
| 1995 | 111.8 mm (4.4 in) |
| 1996 | 77.6 mm (3.1 in) |
| 1997 | 75.7 mm (3.0 in) |
| 1998 | 96.6 mm (3.8 in) |
| 1999 | 130.6 mm (5.1 in) |
| 2000 | 271.0 mm (10.7 in) |
| 2001 | 55.2 mm (2.2 in) |
| 2002 | 80.0 mm (3.1 in) |
| 2003 | 74.2 mm (2.9 in) |
| 2004 | 107.9 mm (4.2 in) |
| 2005 | 84.8 mm (3.3 in) |
| 2006 | 136.7 mm (5.4 in) |
| 2007 | 188.6 mm (7.4 in) |
| 2008 | 105.4 mm (4.1 in) |
| 2009 | 175.2 mm (6.9 in) |
| 2010 | 66.0 mm (2.6 in) |
| 2011 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1904 | 68 days |
| 1905 | 142 days |
| 1906 | 141 days |
| 1907 | 104 days |
| 1908 | 44 days |
| 1909 | 24 days |
| 1910 | 53 days |
| 1911 | 38 days |
| 1912 | 42 days |
| 1913 | 38 days |
| 1914 | 48 days |
| 1915 | 35 days |
| 1916 | 52 days |
| 1917 | 38 days |
| 1918 | 24 days |
| 1919 | 27 days |
| 1920 | 40 days |
| 1921 | 72 days |
| 1922 | 43 days |
| 1923 | 28 days |
| 1924 | 27 days |
| 1925 | 38 days |
| 1926 | 37 days |
| 1927 | 41 days |
| 1928 | 23 days |
| 1929 | 52 days |
| 1930 | 52 days |
| 1931 | 40 days |
| 1932 | 35 days |
| 1933 | 31 days |
| 1934 | 51 days |
| 1935 | 27 days |
| 1936 | 76 days |
| 1937 | 31 days |
| 1938 | 42 days |
| 1939 | 42 days |
| 1940 | 46 days |
| 1941 | 19 days |
| 1942 | 40 days |
| 1943 | 65 days |
| 1944 | 25 days |
| 1945 | 33 days |
| 1946 | 37 days |
| 1947 | 32 days |
| 1948 | 62 days |
| 1949 | 37 days |
| 1950 | 71 days |
| 1951 | 38 days |
| 1952 | 71 days |
| 1953 | 30 days |
| 1954 | 44 days |
| 1955 | 56 days |
| 1956 | 46 days |
| 1957 | 33 days |
| 1958 | 32 days |
| 1959 | 54 days |
| 1960 | 41 days |
| 1961 | 27 days |
| 1962 | 31 days |
| 1963 | 33 days |
| 1964 | 31 days |
| 1965 | 44 days |
| 1966 | 27 days |
| 1967 | 42 days |
| 1968 | 29 days |
| 1969 | 33 days |
| 1970 | 45 days |
| 1971 | 46 days |
| 1972 | 40 days |
| 1973 | 27 days |
| 1974 | 31 days |
| 1975 | 31 days |
| 1976 | 35 days |
| 1977 | 52 days |
| 1978 | 34 days |
| 1979 | 47 days |
| 1980 | 81 days |
| 1981 | 19 days |
| 1982 | 29 days |
| 1983 | 38 days |
| 1984 | 23 days |
| 1985 | 25 days |
| 1986 | 33 days |
| 1987 | 56 days |
| 1988 | 22 days |
| 1989 | 59 days |
| 1990 | 36 days |
| 1991 | 56 days |
| 1992 | 50 days |
| 1993 | 22 days |
| 1994 | 28 days |
| 1995 | 37 days |
| 1996 | 31 days |
| 1997 | 36 days |
| 1998 | 42 days |
| 1999 | 33 days |
| 2000 | 56 days |
| 2001 | 56 days |
| 2002 | 26 days |
| 2003 | 27 days |
| 2004 | 25 days |
| 2005 | 45 days |
| 2006 | 31 days |
| 2007 | 39 days |
| 2008 | 35 days |
| 2009 | 27 days |
| 2010 | 31 days |
| 2011 | 1 day |
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
80 years with a frostAcross 80 years with a frost, the median last spring frost at Frederick falls on 30 March and the median first autumn frost on 7 November, which leaves a median of 223 days between them.
In 1969 to 2006 the median growing season was 224 days. That is 1 day more than in 1910 to 1945.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1910 to 1945) | Recent period (1969 to 2006) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 30 March | 31 March | 28 March | 3 days earlier | -0.9 days per decade |
| First autumn frost | 7 November | 6 November | 9 November | 3 days later | +0.6 days per decade |
| Growing days | 223 days | 223 days | 224 days | 1 day more | +1.6 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
94 years, 1905 to 2006A day with at least 65.3 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 137.6 mm (5.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 65.3 mm (2.6 in) | |
| 5 years | 84.5 mm (3.3 in) | |
| 10 years | 97.2 mm (3.8 in) | |
| 25 years | 113.5 mm (4.5 in) | |
| 50 years | 125.6 mm (4.9 in) | |
| 100 years | 137.6 mm (5.4 in) | Longer than the 94 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, 94 years of values from 1905 to 2006.
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: 162.3 mm (6.4 in) in 1975; 149.9 mm (5.9 in) in 1969; 125.7 mm (4.9 in) in 1922.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Frederick, at 1967. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.4 C (0.6 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1967 | -0.4 | -0.6 | 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).