Fort McPherson Weather Records (CA002201600)
Record envelope, standing records and threshold days for Fort McPherson (CA002201600), Northwest Territories, Canada, with 86 years of record.
Key Facts for Fort McPherson
- Fort McPherson (CA002201600) is a weather station in Northwest Territories, Canada at 67.43 latitude and -134.88 longitude, 31 m (102 ft) above sea level.
- The station reports from 1892 to 1977, 86 years of record.
- 1,464 records set at Fort McPherson still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Fort McPherson set a daily record high maximum temperature of 26.1 C (79.0 F) on 12 June 1977.
About the Station
- Location: Northwest Territories, Canada, 67.43 latitude, -134.88 longitude.
- Elevation: 31 m (102 ft).
- Period of record: 1892 to 1977, 86 years.
- Eligible elements: tmax, tmin, prcp, snow.
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 | 8.9 C (48.0 F) | -55.6 C (-68.1 F) | n/a | n/a |
| Feb | 10.0 C (50.0 F) | -55.0 C (-67.0 F) | n/a | n/a |
| Mar | 10.6 C (51.1 F) | -48.9 C (-56.0 F) | n/a | n/a |
| Apr | 16.7 C (62.1 F) | -44.4 C (-47.9 F) | n/a | n/a |
| May | 28.3 C (82.9 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Jun | 31.1 C (88.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Jul | 32.2 C (90.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Aug | 33.3 C (91.9 F) | -6.7 C (19.9 F) | n/a | n/a |
| Sep | 27.2 C (81.0 F) | -15.0 C (5.0 F) | n/a | n/a |
| Oct | 21.7 C (71.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Nov | 8.9 C (48.0 F) | -46.7 C (-52.1 F) | n/a | n/a |
| Dec | 8.3 C (46.9 F) | -50.6 C (-59.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1892 | 5 |
| 1893 | 9 |
| 1894 | 42 |
| 1895 | 20 |
| 1896 | 31 |
| 1897 | 51 |
| 1898 | 16 |
| 1899 | 24 |
| 1900 | 24 |
| 1907 | 1 |
| 1908 | 5 |
| 1909 | 4 |
| 1910 | 15 |
| 1911 | 14 |
| 1912 | 5 |
| 1913 | 6 |
| 1914 | 14 |
| 1915 | 20 |
| 1916 | 27 |
| 1917 | 17 |
| 1918 | 41 |
| 1919 | 11 |
| 1920 | 23 |
| 1921 | 25 |
| 1922 | 12 |
| 1923 | 13 |
| 1924 | 24 |
| 1925 | 15 |
| 1926 | 21 |
| 1927 | 66 |
| 1928 | 21 |
| 1929 | 3 |
| 1930 | 8 |
| 1931 | 24 |
| 1932 | 8 |
| 1933 | 22 |
| 1934 | 30 |
| 1935 | 13 |
| 1936 | 6 |
| 1937 | 9 |
| 1938 | 31 |
| 1939 | 14 |
| 1940 | 20 |
| 1941 | 11 |
| 1942 | 6 |
| 1943 | 26 |
| 1944 | 22 |
| 1945 | 4 |
| 1946 | 15 |
| 1947 | 13 |
| 1948 | 7 |
| 1949 | 24 |
| 1950 | 7 |
| 1951 | 8 |
| 1952 | 18 |
| 1953 | 13 |
| 1954 | 25 |
| 1955 | 28 |
| 1956 | 26 |
| 1957 | 37 |
| 1958 | 1 |
| 1959 | 25 |
| 1960 | 9 |
| 1961 | 13 |
| 1962 | 17 |
| 1963 | 17 |
| 1964 | 22 |
| 1965 | 33 |
| 1966 | 29 |
| 1967 | 23 |
| 1968 | 14 |
| 1969 | 34 |
| 1970 | 14 |
| 1971 | 19 |
| 1972 | 17 |
| 1973 | 11 |
| 1974 | 18 |
| 1975 | 23 |
| 1976 | 19 |
| 1977 | 6 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1957-08-15 | Record high minimum temperature | Record high minimum temperature 23.9 C (75.0 F) |
| 1964-07-10 | Record daily precipitation | Record daily precipitation 66.0 mm (2.6 in) |
Wettest Day of Each Month
Jul: 66.0 mm (2.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 17.8 mm (0.7 in) | 8 January 1943 |
| Feb | 15.2 mm (0.6 in) | 25 February 1945 |
| Mar | 15.2 mm (0.6 in) | 17 March 1956 |
| Apr | 22.9 mm (0.9 in) | 20 April 1943 |
| May | 24.1 mm (0.9 in) | 21 May 1921 |
| Jun | 37.3 mm (1.5 in) | 19 June 1945 |
| Jul | 66.0 mm (2.6 in) | 10 July 1964 |
| Aug | 50.8 mm (2.0 in) | 12 August 1915 |
| Sep | 28.2 mm (1.1 in) | 14 September 1911 |
| Oct | 35.6 mm (1.4 in) | 29 October 1941 |
| Nov | 17.8 mm (0.7 in) | 14 November 1915 |
| Dec | 20.3 mm (0.8 in) | 31 December 1911 |
Period of Record Coverage
1892 to 1977| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1892 | 92 | 25% | No |
| 1893 | 298 | 82% | No |
| 1894 | 297 | 81% | No |
| 1895 | 220 | 60% | No |
| 1896 | 351 | 96% | Yes |
| 1897 | 359 | 98% | Yes |
| 1898 | 322 | 88% | No |
| 1899 | 310 | 85% | No |
| 1900 | 167 | 46% | No |
| 1907 | 90 | 25% | No |
| 1908 | 179 | 49% | No |
| 1909 | 116 | 32% | No |
| 1910 | 309 | 85% | No |
| 1911 | 298 | 82% | No |
| 1912 | 267 | 73% | No |
| 1913 | 125 | 34% | No |
| 1914 | 152 | 42% | No |
| 1915 | 364 | 100% | Yes |
| 1916 | 353 | 96% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 216 | 59% | No |
| 1919 | 245 | 67% | No |
| 1920 | 324 | 89% | No |
| 1921 | 256 | 70% | No |
| 1922 | 282 | 77% | No |
| 1923 | 267 | 73% | No |
| 1924 | 331 | 90% | Yes |
| 1925 | 285 | 78% | No |
| 1926 | 234 | 64% | No |
| 1927 | 146 | 40% | No |
| 1928 | 268 | 73% | No |
| 1929 | 151 | 41% | No |
| 1930 | 221 | 61% | No |
| 1931 | 263 | 72% | No |
| 1932 | 123 | 34% | No |
| 1933 | 355 | 97% | Yes |
| 1934 | 311 | 85% | No |
| 1935 | 99 | 27% | No |
| 1937 | 180 | 49% | No |
| 1938 | 351 | 96% | Yes |
| 1939 | 315 | 86% | No |
| 1940 | 366 | 100% | Yes |
| 1941 | 360 | 99% | Yes |
| 1942 | 362 | 99% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 176 | 48% | No |
| 1949 | 364 | 100% | Yes |
| 1950 | 243 | 67% | No |
| 1951 | 120 | 33% | No |
| 1952 | 358 | 98% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 363 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 30 | 8% | No |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 362 | 99% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 175 | 48% | No |
| 1971 | 346 | 95% | Yes |
| 1972 | 325 | 89% | No |
| 1973 | 311 | 85% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 210 | 58% | No |
| 1976 | 302 | 83% | No |
| 1977 | 167 | 46% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 June 1977 | Fort McPherson, CA | daily high max | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 8 years | 10 of 100 (Routine) |
| 5 June 1977 | Fort McPherson, CA | daily high max | 26.7 C (80.1 F) | 1.7 C (3.1 F) | 34 years | 20 of 100 (Routine) |
| 25 May 1977 | Fort McPherson, CA | daily snowfall | 1.3 cm (0.5 in) | 1.3 cm (0.5 in) | 83 years | 20 of 100 (Routine) |
| 25 May 1977 | Fort McPherson, CA | daily rain | 1.3 mm (0.05 in) | 0.8 mm (0.03 in) | 39 years | 20 of 100 (Routine) |
| 22 May 1977 | Fort McPherson, CA | daily low max | -3.3 C (26.1 F) | 1.6 C (2.9 F) | 76 years | 33 of 100 (Routine) |
| 21 May 1977 | Fort McPherson, CA | daily low max (Tie) | -4.4 C (24.1 F) | tie | 51 years | 5 of 100 (Routine) |
| 17 May 1977 | Fort McPherson, CA | daily high max | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 31 years | 17 of 100 (Routine) |
| 22 April 1977 | Fort McPherson, CA | daily high max (Tie) | 13.9 C (57.0 F) | tie | 46 years | 5 of 100 (Routine) |
| 4 April 1977 | Fort McPherson, CA | daily rain | 10.4 mm (0.4 in) | 2.8 mm (0.11 in) | 35 years | 20 of 100 (Routine) |
| 4 April 1977 | Fort McPherson, CA | daily snowfall | 10.4 cm (4.1 in) | 2.8 cm (1.1 in) | 35 years | 25 of 100 (Routine) |
| 26 March 1977 | Fort McPherson, CA | daily low max | -26.7 C (-16.1 F) | 0.6 C (1.1 F) | 38 years | 19 of 100 (Routine) |
| 19 March 1977 | Fort McPherson, CA | daily low max | -30.0 C (-22.0 F) | 1.1 C (2.0 F) | 59 years | 26 of 100 (Routine) |
| 1 February 1977 | Fort McPherson, CA | daily rain | 9.1 mm (0.36 in) | 1.5 mm (0.06 in) | 18 years | 18 of 100 (Routine) |
| 1 February 1977 | Fort McPherson, CA | daily snowfall | 9.1 cm (3.6 in) | 1.5 cm (0.6 in) | 18 years | 18 of 100 (Routine) |
| 11 December 1976 | Fort McPherson, CA | daily low max | -38.9 C (-38.0 F) | 0.6 C (1.1 F) | 81 years | 32 of 100 (Routine) |
| 10 December 1976 | Fort McPherson, CA | daily low min (Tie) | -45.0 C (-49.0 F) | tie | 60 years | 6 of 100 (Routine) |
| 30 November 1976 | Fort McPherson, CA | daily rain | 9.9 mm (0.39 in) | 4.1 mm (0.16 in) | 39 years | 20 of 100 (Routine) |
| 30 November 1976 | Fort McPherson, CA | daily snowfall | 9.9 cm (3.9 in) | 4.1 cm (1.6 in) | 39 years | 30 of 100 (Routine) |
| 28 November 1976 | Fort McPherson, CA | daily high max | 3.9 C (39.0 F) | 2.8 C (5.0 F) | 20 years | 17 of 100 (Routine) |
| 26 November 1976 | Fort McPherson, CA | daily rain | 9.1 mm (0.36 in) | 1.5 mm (0.06 in) | 31 years | 20 of 100 (Routine) |
Climate Trend
31 complete years, 1896 to 1974| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1896 | -10.5 C | -1.71 C |
| 1897 | -11.2 C | -2.41 C |
| 1915 | -8.3 C | +0.46 C |
| 1916 | -7.0 C | +1.79 C |
| 1917 | -10.3 C | -1.53 C |
| 1933 | -10.5 C | -1.70 C |
| 1940 | -6.3 C | +2.45 C |
| 1941 | -8.9 C | -0.09 C |
| 1943 | -6.3 C | +2.49 C |
| 1944 | -6.9 C | +1.88 C |
| 1945 | -8.6 C | +0.13 C |
| 1946 | -8.8 C | -0.06 C |
| 1949 | -7.1 C | +1.69 C |
| 1952 | -8.0 C | +0.74 C |
| 1953 | -8.8 C | +0.01 C |
| 1954 | -8.7 C | +0.04 C |
| 1955 | -9.3 C | -0.56 C |
| 1956 | -9.1 C | -0.34 C |
| 1959 | -9.9 C | -1.11 C |
| 1960 | -9.3 C | -0.56 C |
| 1961 | -9.9 C | -1.15 C |
| 1962 | -6.6 C | +2.15 C |
| 1963 | -7.7 C | +1.10 C |
| 1964 | -10.3 C | -1.48 C |
| 1965 | -9.3 C | -0.51 C |
| 1966 | -9.5 C | -0.73 C |
| 1967 | -7.9 C | +0.85 C |
| 1968 | -8.2 C | +0.56 C |
| 1969 | -8.8 C | -0.01 C |
| 1971 | -9.2 C | -0.47 C |
| 1974 | -10.7 C | -1.88 C |
The fitted trend in annual mean temperature here over 1896 to 1974 is 0.1 C (-0.2 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.6) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (-0.2 to 0.3) per decade | 0.1 F (-0.3 to 0.6) per decade | 1896 to 1974 | 31 | Not clearly different from zero |
| Mean daily maximum | 0.00 C (-0.24 to 0.25) per decade | 0.00 F (-0.44 to 0.45) per decade | 1896 to 1974 | 31 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (-0.1 to 0.4) per decade | 0.3 F (-0.2 to 0.8) per decade | 1896 to 1974 | 31 | 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
1892 to 1977| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 33.3 C (91.9 F) | 1919 | 29.4 C (84.9 F) | 79 |
| Coldest night (TNn) | -55.6 C (-68.1 F) | 1894 | -47.8 C (-54.0 F) | 79 |
| Wettest day (Rx1day) | 66.0 mm (2.6 in) | 1964 | 17.8 mm (0.7 in) | 73 |
| Wettest five days (Rx5day) | 80.0 mm (3.1 in) | 1964 | 30.5 mm (1.2 in) | 73 |
| Longest dry spell (CDD) | 58 days | 1909 | 29 days | 73 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1892 | 5.0 C (41.0 F) |
| 1893 | 31.7 C (89.1 F) |
| 1894 | 28.3 C (82.9 F) |
| 1895 | 29.4 C (84.9 F) |
| 1896 | 29.4 C (84.9 F) |
| 1897 | 28.9 C (84.0 F) |
| 1898 | 28.3 C (82.9 F) |
| 1899 | 26.7 C (80.1 F) |
| 1900 | 29.4 C (84.9 F) |
| 1907 | 7.8 C (46.0 F) |
| 1908 | 24.4 C (75.9 F) |
| 1909 | 13.3 C (55.9 F) |
| 1910 | 30.0 C (86.0 F) |
| 1911 | 29.4 C (84.9 F) |
| 1912 | 25.6 C (78.1 F) |
| 1913 | 20.0 C (68.0 F) |
| 1914 | 26.7 C (80.1 F) |
| 1915 | 32.2 C (90.0 F) |
| 1916 | 28.9 C (84.0 F) |
| 1917 | 28.9 C (84.0 F) |
| 1918 | 26.1 C (79.0 F) |
| 1919 | 33.3 C (91.9 F) |
| 1920 | 27.8 C (82.0 F) |
| 1921 | 28.9 C (84.0 F) |
| 1922 | 25.0 C (77.0 F) |
| 1923 | 29.4 C (84.9 F) |
| 1924 | 31.1 C (88.0 F) |
| 1925 | 31.7 C (89.1 F) |
| 1926 | 26.1 C (79.0 F) |
| 1927 | 26.7 C (80.1 F) |
| 1928 | 31.1 C (88.0 F) |
| 1929 | 26.7 C (80.1 F) |
| 1930 | 31.1 C (88.0 F) |
| 1931 | 26.7 C (80.1 F) |
| 1932 | 15.0 C (59.0 F) |
| 1933 | 28.9 C (84.0 F) |
| 1934 | 29.4 C (84.9 F) |
| 1935 | -1.1 C (30.0 F) |
| 1936 | n/a |
| 1937 | 26.1 C (79.0 F) |
| 1938 | 29.4 C (84.9 F) |
| 1939 | 28.9 C (84.0 F) |
| 1940 | 29.4 C (84.9 F) |
| 1941 | 28.3 C (82.9 F) |
| 1942 | 30.0 C (86.0 F) |
| 1943 | 30.6 C (87.1 F) |
| 1944 | 29.4 C (84.9 F) |
| 1945 | 28.3 C (82.9 F) |
| 1946 | 32.2 C (90.0 F) |
| 1947 | 32.2 C (90.0 F) |
| 1948 | 2.2 C (36.0 F) |
| 1949 | 30.0 C (86.0 F) |
| 1950 | 31.1 C (88.0 F) |
| 1951 | 22.2 C (72.0 F) |
| 1952 | 30.0 C (86.0 F) |
| 1953 | 31.1 C (88.0 F) |
| 1954 | 31.7 C (89.1 F) |
| 1955 | 29.4 C (84.9 F) |
| 1956 | 30.6 C (87.1 F) |
| 1957 | 31.1 C (88.0 F) |
| 1958 | 28.9 C (84.0 F) |
| 1959 | 29.4 C (84.9 F) |
| 1960 | 30.0 C (86.0 F) |
| 1961 | 29.4 C (84.9 F) |
| 1962 | 30.6 C (87.1 F) |
| 1963 | 31.7 C (89.1 F) |
| 1964 | 30.6 C (87.1 F) |
| 1965 | 28.3 C (82.9 F) |
| 1966 | 30.6 C (87.1 F) |
| 1967 | 32.2 C (90.0 F) |
| 1968 | 31.1 C (88.0 F) |
| 1969 | 30.0 C (86.0 F) |
| 1970 | 11.1 C (52.0 F) |
| 1971 | 29.4 C (84.9 F) |
| 1972 | 31.7 C (89.1 F) |
| 1973 | 25.6 C (78.1 F) |
| 1974 | 28.9 C (84.0 F) |
| 1975 | 22.2 C (72.0 F) |
| 1976 | 27.2 C (81.0 F) |
| 1977 | 26.7 C (80.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1892 | -42.8 C (-45.0 F) |
| 1893 | -48.3 C (-54.9 F) |
| 1894 | -55.6 C (-68.1 F) |
| 1895 | -50.0 C (-58.0 F) |
| 1896 | -53.9 C (-65.0 F) |
| 1897 | -51.7 C (-61.1 F) |
| 1898 | -46.7 C (-52.1 F) |
| 1899 | -50.0 C (-58.0 F) |
| 1900 | -51.7 C (-61.1 F) |
| 1907 | -41.1 C (-42.0 F) |
| 1908 | -48.3 C (-54.9 F) |
| 1909 | -41.1 C (-42.0 F) |
| 1910 | -49.4 C (-56.9 F) |
| 1911 | -47.8 C (-54.0 F) |
| 1912 | -45.6 C (-50.1 F) |
| 1913 | -49.4 C (-56.9 F) |
| 1914 | -40.0 C (-40.0 F) |
| 1915 | -45.0 C (-49.0 F) |
| 1916 | -47.2 C (-53.0 F) |
| 1917 | -48.9 C (-56.0 F) |
| 1918 | -48.3 C (-54.9 F) |
| 1919 | -47.2 C (-53.0 F) |
| 1920 | -47.8 C (-54.0 F) |
| 1921 | -44.4 C (-47.9 F) |
| 1922 | -41.1 C (-42.0 F) |
| 1923 | -48.9 C (-56.0 F) |
| 1924 | -43.9 C (-47.0 F) |
| 1925 | -46.1 C (-51.0 F) |
| 1926 | -45.0 C (-49.0 F) |
| 1927 | -46.7 C (-52.1 F) |
| 1928 | -40.6 C (-41.1 F) |
| 1929 | -40.6 C (-41.1 F) |
| 1930 | -43.3 C (-45.9 F) |
| 1931 | -45.0 C (-49.0 F) |
| 1932 | -46.7 C (-52.1 F) |
| 1933 | -50.0 C (-58.0 F) |
| 1934 | -52.2 C (-62.0 F) |
| 1935 | -47.8 C (-54.0 F) |
| 1936 | -50.0 C (-58.0 F) |
| 1937 | -50.6 C (-59.1 F) |
| 1938 | -47.2 C (-53.0 F) |
| 1939 | -48.9 C (-56.0 F) |
| 1940 | -43.3 C (-45.9 F) |
| 1941 | -45.0 C (-49.0 F) |
| 1942 | -45.6 C (-50.1 F) |
| 1943 | -44.4 C (-47.9 F) |
| 1944 | -45.0 C (-49.0 F) |
| 1945 | -41.7 C (-43.1 F) |
| 1946 | -47.8 C (-54.0 F) |
| 1947 | -54.4 C (-65.9 F) |
| 1948 | -44.4 C (-47.9 F) |
| 1949 | -47.8 C (-54.0 F) |
| 1950 | -46.7 C (-52.1 F) |
| 1951 | -42.8 C (-45.0 F) |
| 1952 | -48.3 C (-54.9 F) |
| 1953 | -51.7 C (-61.1 F) |
| 1954 | -51.2 C (-60.2 F) |
| 1955 | -48.3 C (-54.9 F) |
| 1956 | -47.8 C (-54.0 F) |
| 1957 | -46.7 C (-52.1 F) |
| 1958 | n/a |
| 1959 | -52.2 C (-62.0 F) |
| 1960 | -51.2 C (-60.2 F) |
| 1961 | -47.2 C (-53.0 F) |
| 1962 | -47.8 C (-54.0 F) |
| 1963 | -46.1 C (-51.0 F) |
| 1964 | -48.3 C (-54.9 F) |
| 1965 | -51.7 C (-61.1 F) |
| 1966 | -52.2 C (-62.0 F) |
| 1967 | -48.9 C (-56.0 F) |
| 1968 | -55.0 C (-67.0 F) |
| 1969 | -50.6 C (-59.1 F) |
| 1970 | -48.9 C (-56.0 F) |
| 1971 | -53.3 C (-63.9 F) |
| 1972 | -50.0 C (-58.0 F) |
| 1973 | -46.7 C (-52.1 F) |
| 1974 | -49.4 C (-56.9 F) |
| 1975 | -53.3 C (-63.9 F) |
| 1976 | -50.0 C (-58.0 F) |
| 1977 | -44.4 C (-47.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1892 | 4.6 mm (0.18 in) |
| 1893 | 32.5 mm (1.3 in) |
| 1894 | 12.7 mm (0.5 in) |
| 1895 | 7.6 mm (0.30 in) |
| 1896 | n/a |
| 1897 | n/a |
| 1898 | n/a |
| 1899 | n/a |
| 1900 | n/a |
| 1907 | 10.2 mm (0.4 in) |
| 1908 | 7.6 mm (0.30 in) |
| 1909 | 8.9 mm (0.35 in) |
| 1910 | 17.3 mm (0.7 in) |
| 1911 | 28.2 mm (1.1 in) |
| 1912 | 10.2 mm (0.4 in) |
| 1913 | n/a |
| 1914 | 10.2 mm (0.4 in) |
| 1915 | 50.8 mm (2.0 in) |
| 1916 | 17.8 mm (0.7 in) |
| 1917 | 33.0 mm (1.3 in) |
| 1918 | 12.7 mm (0.5 in) |
| 1919 | 17.3 mm (0.7 in) |
| 1920 | 27.2 mm (1.1 in) |
| 1921 | 24.1 mm (0.9 in) |
| 1922 | 10.2 mm (0.4 in) |
| 1923 | 20.3 mm (0.8 in) |
| 1924 | 10.7 mm (0.4 in) |
| 1925 | 14.0 mm (0.6 in) |
| 1926 | 14.5 mm (0.6 in) |
| 1927 | n/a |
| 1928 | 12.7 mm (0.5 in) |
| 1929 | 25.4 mm (1.0 in) |
| 1930 | 26.7 mm (1.1 in) |
| 1931 | 8.4 mm (0.33 in) |
| 1932 | 19.3 mm (0.8 in) |
| 1933 | 10.2 mm (0.4 in) |
| 1934 | 12.7 mm (0.5 in) |
| 1935 | 26.7 mm (1.1 in) |
| 1936 | 5.1 mm (0.20 in) |
| 1937 | 26.2 mm (1.0 in) |
| 1938 | 35.8 mm (1.4 in) |
| 1939 | 17.8 mm (0.7 in) |
| 1940 | 17.8 mm (0.7 in) |
| 1941 | 35.6 mm (1.4 in) |
| 1942 | 20.3 mm (0.8 in) |
| 1943 | 22.9 mm (0.9 in) |
| 1944 | 18.5 mm (0.7 in) |
| 1945 | 37.3 mm (1.5 in) |
| 1946 | 21.8 mm (0.9 in) |
| 1947 | 14.0 mm (0.6 in) |
| 1948 | 12.7 mm (0.5 in) |
| 1949 | 24.4 mm (1.0 in) |
| 1950 | 10.9 mm (0.4 in) |
| 1951 | 22.9 mm (0.9 in) |
| 1952 | 46.5 mm (1.8 in) |
| 1953 | 18.5 mm (0.7 in) |
| 1954 | 13.2 mm (0.5 in) |
| 1955 | 13.5 mm (0.5 in) |
| 1956 | 24.6 mm (1.0 in) |
| 1957 | 17.8 mm (0.7 in) |
| 1958 | 13.2 mm (0.5 in) |
| 1959 | 14.0 mm (0.6 in) |
| 1960 | 22.9 mm (0.9 in) |
| 1961 | 31.8 mm (1.3 in) |
| 1962 | 15.2 mm (0.6 in) |
| 1963 | 15.2 mm (0.6 in) |
| 1964 | 66.0 mm (2.6 in) |
| 1965 | 20.1 mm (0.8 in) |
| 1966 | 17.8 mm (0.7 in) |
| 1967 | 17.8 mm (0.7 in) |
| 1968 | 15.2 mm (0.6 in) |
| 1969 | 15.2 mm (0.6 in) |
| 1970 | 33.0 mm (1.3 in) |
| 1971 | 29.7 mm (1.2 in) |
| 1972 | 33.0 mm (1.3 in) |
| 1973 | 18.3 mm (0.7 in) |
| 1974 | 18.0 mm (0.7 in) |
| 1975 | 28.7 mm (1.1 in) |
| 1976 | 13.5 mm (0.5 in) |
| 1977 | 10.4 mm (0.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1892 | 13.0 mm (0.5 in) |
| 1893 | 50.3 mm (2.0 in) |
| 1894 | 23.2 mm (0.9 in) |
| 1895 | 15.9 mm (0.6 in) |
| 1896 | n/a |
| 1897 | n/a |
| 1898 | n/a |
| 1899 | n/a |
| 1900 | n/a |
| 1907 | 10.2 mm (0.4 in) |
| 1908 | 12.7 mm (0.5 in) |
| 1909 | 9.7 mm (0.38 in) |
| 1910 | 25.3 mm (1.0 in) |
| 1911 | 31.0 mm (1.2 in) |
| 1912 | 27.9 mm (1.1 in) |
| 1913 | n/a |
| 1914 | 21.3 mm (0.8 in) |
| 1915 | 67.8 mm (2.7 in) |
| 1916 | 22.9 mm (0.9 in) |
| 1917 | 44.4 mm (1.7 in) |
| 1918 | 18.0 mm (0.7 in) |
| 1919 | 19.3 mm (0.8 in) |
| 1920 | 41.7 mm (1.6 in) |
| 1921 | 24.1 mm (0.9 in) |
| 1922 | 12.7 mm (0.5 in) |
| 1923 | 29.7 mm (1.2 in) |
| 1924 | 36.1 mm (1.4 in) |
| 1925 | 14.3 mm (0.6 in) |
| 1926 | 24.9 mm (1.0 in) |
| 1927 | n/a |
| 1928 | 30.8 mm (1.2 in) |
| 1929 | 30.4 mm (1.2 in) |
| 1930 | 26.7 mm (1.1 in) |
| 1931 | 15.0 mm (0.6 in) |
| 1932 | 20.6 mm (0.8 in) |
| 1933 | 12.7 mm (0.5 in) |
| 1934 | 21.1 mm (0.8 in) |
| 1935 | 40.2 mm (1.6 in) |
| 1936 | 3.8 mm (0.15 in) |
| 1937 | 32.5 mm (1.3 in) |
| 1938 | 41.6 mm (1.6 in) |
| 1939 | 26.8 mm (1.1 in) |
| 1940 | 30.6 mm (1.2 in) |
| 1941 | 62.3 mm (2.5 in) |
| 1942 | 31.2 mm (1.2 in) |
| 1943 | 44.5 mm (1.8 in) |
| 1944 | 29.3 mm (1.2 in) |
| 1945 | 46.7 mm (1.8 in) |
| 1946 | 33.0 mm (1.3 in) |
| 1947 | 28.0 mm (1.1 in) |
| 1948 | 25.7 mm (1.0 in) |
| 1949 | 42.7 mm (1.7 in) |
| 1950 | 12.7 mm (0.5 in) |
| 1951 | 50.8 mm (2.0 in) |
| 1952 | 77.8 mm (3.1 in) |
| 1953 | 32.8 mm (1.3 in) |
| 1954 | 25.4 mm (1.0 in) |
| 1955 | 27.9 mm (1.1 in) |
| 1956 | 37.0 mm (1.5 in) |
| 1957 | 35.6 mm (1.4 in) |
| 1958 | 15.0 mm (0.6 in) |
| 1959 | 30.5 mm (1.2 in) |
| 1960 | 38.1 mm (1.5 in) |
| 1961 | 38.2 mm (1.5 in) |
| 1962 | 33.0 mm (1.3 in) |
| 1963 | 15.2 mm (0.6 in) |
| 1964 | 80.0 mm (3.1 in) |
| 1965 | 38.1 mm (1.5 in) |
| 1966 | 53.3 mm (2.1 in) |
| 1967 | 49.6 mm (2.0 in) |
| 1968 | 39.3 mm (1.5 in) |
| 1969 | 38.2 mm (1.5 in) |
| 1970 | 58.4 mm (2.3 in) |
| 1971 | 45.7 mm (1.8 in) |
| 1972 | 53.8 mm (2.1 in) |
| 1973 | 24.9 mm (1.0 in) |
| 1974 | 42.5 mm (1.7 in) |
| 1975 | 32.0 mm (1.3 in) |
| 1976 | 26.6 mm (1.0 in) |
| 1977 | 16.5 mm (0.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1892 | 16 days |
| 1893 | 43 days |
| 1894 | 33 days |
| 1895 | 22 days |
| 1896 | n/a |
| 1897 | n/a |
| 1898 | n/a |
| 1899 | n/a |
| 1900 | n/a |
| 1907 | 29 days |
| 1908 | 23 days |
| 1909 | 58 days |
| 1910 | 25 days |
| 1911 | 39 days |
| 1912 | 29 days |
| 1913 | n/a |
| 1914 | 20 days |
| 1915 | 27 days |
| 1916 | 37 days |
| 1917 | 37 days |
| 1918 | 22 days |
| 1919 | 15 days |
| 1920 | 44 days |
| 1921 | 31 days |
| 1922 | 15 days |
| 1923 | 24 days |
| 1924 | 22 days |
| 1925 | 26 days |
| 1926 | 13 days |
| 1927 | n/a |
| 1928 | 25 days |
| 1929 | 21 days |
| 1930 | 33 days |
| 1931 | 25 days |
| 1932 | 30 days |
| 1933 | 28 days |
| 1934 | 45 days |
| 1935 | 37 days |
| 1936 | 22 days |
| 1937 | 17 days |
| 1938 | 25 days |
| 1939 | 28 days |
| 1940 | 33 days |
| 1941 | 36 days |
| 1942 | 27 days |
| 1943 | 32 days |
| 1944 | 30 days |
| 1945 | 37 days |
| 1946 | 27 days |
| 1947 | 47 days |
| 1948 | 31 days |
| 1949 | 20 days |
| 1950 | 39 days |
| 1951 | 16 days |
| 1952 | 44 days |
| 1953 | 45 days |
| 1954 | 39 days |
| 1955 | 35 days |
| 1956 | 37 days |
| 1957 | 29 days |
| 1958 | 21 days |
| 1959 | 34 days |
| 1960 | 40 days |
| 1961 | 31 days |
| 1962 | 18 days |
| 1963 | 49 days |
| 1964 | 38 days |
| 1965 | 43 days |
| 1966 | 51 days |
| 1967 | 21 days |
| 1968 | 36 days |
| 1969 | 34 days |
| 1970 | 21 days |
| 1971 | 38 days |
| 1972 | 22 days |
| 1973 | 21 days |
| 1974 | 38 days |
| 1975 | 25 days |
| 1976 | 25 days |
| 1977 | 22 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
31 years with a frostAcross 31 years with a frost, the median last spring frost at Fort McPherson falls on 6 June and the median first autumn frost on 24 August, which leaves a median of 81 days between them.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1897 to 1974) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 6 June | n/a | 6 June | n/a | -1.0 days per decade |
| First autumn frost | 24 August | n/a | 26 August | n/a | +0.6 days per decade |
| Growing days | 81 days | n/a | 81 days | n/a | +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
31 years, 1893 to 1974A day with at least 22.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 76.5 mm (3.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 22.0 mm (0.9 in) | |
| 5 years | 32.6 mm (1.3 in) | |
| 10 years | 40.9 mm (1.6 in) | |
| 25 years | 53.4 mm (2.1 in) | |
| 50 years | 64.2 mm (2.5 in) | Longer than the 31 years of record |
| 100 years | 76.5 mm (3.0 in) | Longer than the 31 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, 31 years of values from 1893 to 1974.
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: 66.0 mm (2.6 in) in 1964; 50.8 mm (2.0 in) in 1915; 46.5 mm (1.8 in) in 1952.
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 (2026-10-17).