Ft Yukon Weather Records (USW00026413)
Record envelope, standing records and threshold days for Ft Yukon (USW00026413), Alaska, United States, with 128 years of record.
Key Facts for Ft Yukon
- Ft Yukon (USW00026413) is a weather station in Alaska, United States at 66.57 latitude and -145.23 longitude, 132 m (433 ft) above sea level.
- The station reports from 1899 to 2026, 128 years of record.
- 1,464 records set at Ft Yukon still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Ft Yukon set a daily record precipitation of 6.6 mm (0.26 in) on 21 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Alaska, United States, 66.57 latitude, -145.23 longitude.
- Elevation: 132 m (433 ft).
- Period of record: 1899 to 2026, 128 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 | 4.4 C (39.9 F) | -56.1 C (-69.0 F) | -10.6 C (12.9 F) | -48.3 C (-54.9 F) |
| Feb | 5.0 C (41.0 F) | -56.7 C (-70.1 F) | -8.9 C (16.0 F) | -46.7 C (-52.1 F) |
| Mar | 10.0 C (50.0 F) | -46.1 C (-51.0 F) | 1.7 C (35.1 F) | -40.0 C (-40.0 F) |
| Apr | 18.3 C (64.9 F) | -40.6 C (-41.1 F) | 13.9 C (57.0 F) | -21.7 C (-7.1 F) |
| May | 29.4 C (84.9 F) | -19.4 C (-2.9 F) | 18.9 C (66.0 F) | -3.3 C (26.1 F) |
| Jun | 37.8 C (100.0 F) | -3.9 C (25.0 F) | 27.8 C (82.0 F) | 3.3 C (37.9 F) |
| Jul | 36.1 C (97.0 F) | -3.9 C (25.0 F) | 28.9 C (84.0 F) | 1.1 C (34.0 F) |
| Aug | 31.1 C (88.0 F) | -6.1 C (21.0 F) | 26.7 C (80.1 F) | 1.1 C (34.0 F) |
| Sep | 26.1 C (79.0 F) | -17.8 C (0.0 F) | 13.3 C (55.9 F) | -5.0 C (23.0 F) |
| Oct | 16.1 C (61.0 F) | -38.3 C (-36.9 F) | 2.8 C (37.0 F) | -15.0 C (5.0 F) |
| Nov | 10.6 C (51.1 F) | -51.7 C (-61.1 F) | n/a | n/a |
| Dec | 2.8 C (37.0 F) | -57.2 C (-71.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1899 | 9 |
| 1900 | 46 |
| 1901 | 12 |
| 1902 | 14 |
| 1903 | 14 |
| 1904 | 8 |
| 1909 | 7 |
| 1910 | 22 |
| 1911 | 34 |
| 1913 | 4 |
| 1914 | 3 |
| 1915 | 22 |
| 1917 | 39 |
| 1918 | 45 |
| 1919 | 25 |
| 1920 | 32 |
| 1921 | 12 |
| 1922 | 32 |
| 1923 | 24 |
| 1924 | 22 |
| 1925 | 26 |
| 1926 | 29 |
| 1927 | 24 |
| 1928 | 24 |
| 1929 | 23 |
| 1930 | 27 |
| 1931 | 10 |
| 1932 | 20 |
| 1933 | 28 |
| 1934 | 3 |
| 1935 | 32 |
| 1936 | 23 |
| 1937 | 24 |
| 1938 | 31 |
| 1939 | 18 |
| 1940 | 31 |
| 1941 | 14 |
| 1942 | 3 |
| 1943 | 8 |
| 1944 | 15 |
| 1945 | 7 |
| 1946 | 28 |
| 1947 | 27 |
| 1948 | 21 |
| 1949 | 22 |
| 1950 | 21 |
| 1951 | 37 |
| 1952 | 23 |
| 1953 | 39 |
| 1954 | 21 |
| 1955 | 21 |
| 1956 | 26 |
| 1957 | 30 |
| 1958 | 14 |
| 1959 | 28 |
| 1960 | 17 |
| 1961 | 21 |
| 1962 | 12 |
| 1963 | 6 |
| 1965 | 1 |
| 1966 | 3 |
| 1967 | 10 |
| 1968 | 7 |
| 1969 | 26 |
| 1970 | 1 |
| 1971 | 11 |
| 1972 | 8 |
| 1984 | 5 |
| 1985 | 21 |
| 1986 | 13 |
| 1987 | 6 |
| 1988 | 21 |
| 1989 | 39 |
| 1990 | 5 |
| 2024 | 2 |
| 2025 | 22 |
| 2026 | 3 |
Wettest Day of Each Month
Jan: 39.4 mm (1.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 39.4 mm (1.6 in) | 20 January 1901 |
| Feb | 25.4 mm (1.0 in) | 7 February 1968 |
| Mar | 8.6 mm (0.34 in) | 4 March 1904 |
| Apr | 14.0 mm (0.6 in) | 4 April 1971 |
| May | 17.8 mm (0.7 in) | 23 May 1904 |
| Jun | 31.8 mm (1.3 in) | 26 June 1928 |
| Jul | 38.6 mm (1.5 in) | 22 July 1962 |
| Aug | 26.9 mm (1.1 in) | 22 August 1936 |
| Sep | 27.2 mm (1.1 in) | 14 September 1899 |
| Oct | 25.4 mm (1.0 in) | 20 October 1987 |
| Nov | 16.5 mm (0.6 in) | 2 November 1939 |
| Dec | 25.4 mm (1.0 in) | 18 December 1943 |
Period of Record Coverage
1899 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1899 | 170 | 47% | No |
| 1900 | 324 | 89% | No |
| 1901 | 230 | 63% | No |
| 1902 | 61 | 17% | No |
| 1903 | 94 | 26% | No |
| 1904 | 81 | 22% | No |
| 1909 | 266 | 73% | No |
| 1910 | 205 | 56% | No |
| 1911 | 163 | 45% | No |
| 1913 | 28 | 8% | No |
| 1914 | 99 | 27% | No |
| 1915 | 194 | 53% | No |
| 1917 | 218 | 60% | No |
| 1918 | 363 | 99% | Yes |
| 1919 | 360 | 99% | Yes |
| 1920 | 352 | 96% | Yes |
| 1921 | 260 | 71% | No |
| 1922 | 316 | 87% | No |
| 1923 | 210 | 58% | No |
| 1924 | 335 | 92% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 360 | 99% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 12 | 3% | No |
| 1935 | 71 | 19% | No |
| 1936 | 363 | 99% | Yes |
| 1937 | 341 | 93% | Yes |
| 1938 | 363 | 99% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 120 | 33% | No |
| 1943 | 160 | 44% | No |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 353 | 97% | Yes |
| 1947 | 358 | 98% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 328 | 90% | No |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 362 | 99% | Yes |
| 1962 | 334 | 92% | Yes |
| 1963 | 328 | 90% | No |
| 1965 | 30 | 8% | No |
| 1966 | 31 | 8% | No |
| 1967 | 146 | 40% | No |
| 1968 | 216 | 59% | No |
| 1969 | 224 | 61% | No |
| 1970 | 18 | 5% | No |
| 1971 | 262 | 72% | No |
| 1972 | 104 | 28% | No |
| 1984 | 100 | 27% | No |
| 1985 | 356 | 98% | Yes |
| 1986 | 361 | 99% | Yes |
| 1987 | 357 | 98% | Yes |
| 1988 | 348 | 95% | Yes |
| 1989 | 345 | 95% | Yes |
| 1990 | 86 | 24% | No |
| 2024 | 85 | 23% | No |
| 2025 | 337 | 92% | Yes |
| 2026 | 277 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 21 September 2026 | Ft Yukon, US | daily rain (Provisional) | 6.6 mm (0.26 in) | 1.0 mm (0.04 in) | 95 years | 20 of 100 (Routine) |
| 17 September 2026 | Ft Yukon, US | daily high min (Tie, Provisional) | 6.7 C (44.1 F) | tie | 40 years | 5 of 100 (Routine) |
| 12 September 2026 | Ft Yukon, US | daily high min (Tie, Provisional) | 8.9 C (48.0 F) | tie | 40 years | 5 of 100 (Routine) |
| 23 August 2026 | Ft Yukon, US | daily high min (Provisional) | 11.7 C (53.1 F) | 0.6 C (1.1 F) | 80 years | 35 of 100 (Notable) |
| 14 August 2026 | Ft Yukon, US | daily high min | 15.6 C (60.1 F) | 1.7 C (3.1 F) | 89 years | 40 of 100 (Notable) |
| 2 August 2026 | Ft Yukon, US | daily high min (Tie) | 13.9 C (57.0 F) | tie | 100 years | 10 of 100 (Routine) |
| 27 July 2026 | Ft Yukon, US | daily low max | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 84 years | 37 of 100 (Notable) |
| 16 July 2026 | Ft Yukon, US | daily rain | 10.2 mm (0.4 in) | 3.1 mm (0.12 in) | 63 years | 20 of 100 (Routine) |
| 15 July 2026 | Ft Yukon, US | daily rain | 11.7 mm (0.5 in) | 2.6 mm (0.10 in) | 72 years | 20 of 100 (Routine) |
| 15 July 2026 | Ft Yukon, US | daily low max (Tie) | 15.0 C (59.0 F) | tie | 104 years | 10 of 100 (Routine) |
| 28 June 2026 | Ft Yukon, US | daily rain | 27.7 mm (1.1 in) | 4.8 mm (0.19 in) | 121 years | 51 of 100 (Notable) |
| 26 May 2026 | Ft Yukon, US | daily rain | 5.6 mm (0.22 in) | 1.8 mm (0.07 in) | 104 years | 20 of 100 (Routine) |
| 21 May 2026 | Ft Yukon, US | daily rain | 3.6 mm (0.14 in) | 0.6 mm (0.02 in) | 123 years | 20 of 100 (Routine) |
| 20 May 2026 | Ft Yukon, US | daily high min | 8.3 C (46.9 F) | 1.1 C (2.0 F) | 36 years | 23 of 100 (Routine) |
| 29 April 2026 | Ft Yukon, US | daily rain | 7.9 mm (0.31 in) | 6.6 mm (0.26 in) | 105 years | 20 of 100 (Routine) |
| 25 April 2026 | Ft Yukon, US | daily rain | 3.3 mm (0.13 in) | 0.8 mm (0.03 in) | 95 years | 20 of 100 (Routine) |
| 22 November 2025 | Ft Yukon, US | daily high min | -7.2 C (19.0 F) | 5.0 C (9.0 F) | 84 years | 40 of 100 (Notable) |
| 21 November 2025 | Ft Yukon, US | daily high min | -8.9 C (16.0 F) | 5.0 C (9.0 F) | 84 years | 40 of 100 (Notable) |
| 13 October 2025 | Ft Yukon, US | daily high min | 2.2 C (36.0 F) | 2.2 C (4.0 F) | 103 years | 43 of 100 (Notable) |
| 9 October 2025 | Ft Yukon, US | daily high min | 2.8 C (37.0 F) | 2.2 C (4.0 F) | 68 years | 33 of 100 (Routine) |
Climate Trend
39 complete years, 1918 to 1989| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1918 | -7.6 C | -1.32 C |
| 1919 | -6.7 C | -0.33 C |
| 1920 | -6.5 C | -0.21 C |
| 1925 | -6.7 C | -0.40 C |
| 1926 | -4.1 C | +2.18 C |
| 1927 | -7.6 C | -1.31 C |
| 1928 | -5.7 C | +0.62 C |
| 1929 | -5.0 C | +1.29 C |
| 1930 | -6.6 C | -0.27 C |
| 1931 | -6.0 C | +0.35 C |
| 1932 | -7.9 C | -1.56 C |
| 1933 | -8.3 C | -2.00 C |
| 1936 | -7.5 C | -1.15 C |
| 1938 | -5.3 C | +0.99 C |
| 1939 | -5.7 C | +0.65 C |
| 1940 | -3.8 C | +2.56 C |
| 1941 | -5.9 C | +0.44 C |
| 1944 | -4.8 C | +1.55 C |
| 1945 | -6.3 C | +0.06 C |
| 1946 | -7.0 C | -0.66 C |
| 1947 | -6.1 C | +0.25 C |
| 1948 | -8.4 C | -2.07 C |
| 1949 | -6.3 C | -0.01 C |
| 1950 | -5.9 C | +0.42 C |
| 1952 | -6.5 C | -0.14 C |
| 1953 | -6.7 C | -0.40 C |
| 1954 | -7.1 C | -0.81 C |
| 1955 | -8.1 C | -1.73 C |
| 1956 | -8.7 C | -2.36 C |
| 1957 | -4.8 C | +1.50 C |
| 1958 | -5.8 C | +0.51 C |
| 1959 | -7.9 C | -1.62 C |
| 1960 | -6.4 C | -0.12 C |
| 1961 | -7.9 C | -1.55 C |
| 1985 | -5.0 C | +1.31 C |
| 1986 | -5.8 C | +0.52 C |
| 1987 | -4.8 C | +1.52 C |
| 1988 | -4.4 C | +1.92 C |
| 1989 | -5.1 C | +1.22 C |
The fitted trend in annual mean temperature here over 1918 to 1989 is 0.2 C (-0.1 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.1 to 0.6) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (-0.1 to 0.4) per decade | 0.3 F (-0.1 to 0.6) per decade | 1918 to 1989 | 39 | Not clearly different from zero |
| Mean daily maximum | 0.1 C (-0.1 to 0.4) per decade | 0.3 F (-0.1 to 0.7) per decade | 1918 to 1989 | 39 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.0 to 0.4) per decade | 0.3 F (-0.1 to 0.7) per decade | 1918 to 1989 | 39 | 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
1899 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 1915 | 29.4 C (84.9 F) | 77 |
| Coldest night (TNn) | -57.2 C (-71.0 F) | 1935 | -51.7 C (-61.1 F) | 77 |
| Wettest day (Rx1day) | 39.4 mm (1.6 in) | 1901 | 11.9 mm (0.5 in) | 76 |
| Wettest five days (Rx5day) | 60.7 mm (2.4 in) | 1936 | 19.0 mm (0.7 in) | 73 |
| Longest dry spell (CDD) | 111 days | 1933 | 41 days | 75 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1899 | 26.1 C (79.0 F) |
| 1900 | 33.9 C (93.0 F) |
| 1901 | 29.4 C (84.9 F) |
| 1902 | 27.2 C (81.0 F) |
| 1903 | 31.7 C (89.1 F) |
| 1904 | 28.3 C (82.9 F) |
| 1909 | 28.3 C (82.9 F) |
| 1910 | 29.4 C (84.9 F) |
| 1911 | 31.7 C (89.1 F) |
| 1913 | 10.0 C (50.0 F) |
| 1914 | 7.8 C (46.0 F) |
| 1915 | 37.8 C (100.0 F) |
| 1917 | 29.4 C (84.9 F) |
| 1918 | 33.3 C (91.9 F) |
| 1919 | 31.1 C (88.0 F) |
| 1920 | 29.4 C (84.9 F) |
| 1921 | 21.7 C (71.1 F) |
| 1922 | 29.4 C (84.9 F) |
| 1923 | 16.1 C (61.0 F) |
| 1924 | 31.1 C (88.0 F) |
| 1925 | 30.0 C (86.0 F) |
| 1926 | 29.4 C (84.9 F) |
| 1927 | 29.4 C (84.9 F) |
| 1928 | 30.0 C (86.0 F) |
| 1929 | 30.0 C (86.0 F) |
| 1930 | 28.9 C (84.0 F) |
| 1931 | 26.7 C (80.1 F) |
| 1932 | 28.9 C (84.0 F) |
| 1933 | 30.0 C (86.0 F) |
| 1934 | -17.2 C (1.0 F) |
| 1935 | 10.6 C (51.1 F) |
| 1936 | 27.8 C (82.0 F) |
| 1937 | 32.2 C (90.0 F) |
| 1938 | 29.4 C (84.9 F) |
| 1939 | 31.7 C (89.1 F) |
| 1940 | 32.2 C (90.0 F) |
| 1941 | 28.9 C (84.0 F) |
| 1942 | 13.9 C (57.0 F) |
| 1943 | 27.8 C (82.0 F) |
| 1944 | 30.0 C (86.0 F) |
| 1945 | 26.7 C (80.1 F) |
| 1946 | 30.6 C (87.1 F) |
| 1947 | 30.6 C (87.1 F) |
| 1948 | 29.4 C (84.9 F) |
| 1949 | 28.9 C (84.0 F) |
| 1950 | 29.4 C (84.9 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 29.4 C (84.9 F) |
| 1953 | 32.2 C (90.0 F) |
| 1954 | 31.1 C (88.0 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 27.8 C (82.0 F) |
| 1957 | 30.0 C (86.0 F) |
| 1958 | 32.8 C (91.0 F) |
| 1959 | 28.3 C (82.9 F) |
| 1960 | 31.7 C (89.1 F) |
| 1961 | 30.0 C (86.0 F) |
| 1962 | 28.9 C (84.0 F) |
| 1963 | 28.9 C (84.0 F) |
| 1965 | -18.3 C (-0.9 F) |
| 1966 | -18.3 C (-0.9 F) |
| 1967 | 30.6 C (87.1 F) |
| 1968 | 29.4 C (84.9 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 18.3 C (64.9 F) |
| 1971 | 30.0 C (86.0 F) |
| 1972 | 30.0 C (86.0 F) |
| 1984 | 16.7 C (62.1 F) |
| 1985 | 30.0 C (86.0 F) |
| 1986 | 33.3 C (91.9 F) |
| 1987 | 31.7 C (89.1 F) |
| 1988 | 30.6 C (87.1 F) |
| 1989 | 30.6 C (87.1 F) |
| 1990 | 8.9 C (48.0 F) |
| 2024 | 8.3 C (46.9 F) |
| 2025 | 30.6 C (87.1 F) |
| 2026 | 28.9 C (84.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1899 | -55.6 C (-68.1 F) |
| 1900 | -48.9 C (-56.0 F) |
| 1901 | -55.6 C (-68.1 F) |
| 1902 | -56.1 C (-69.0 F) |
| 1903 | -55.6 C (-68.1 F) |
| 1904 | -51.7 C (-61.1 F) |
| 1909 | -53.3 C (-63.9 F) |
| 1910 | -56.7 C (-70.1 F) |
| 1911 | -42.8 C (-45.0 F) |
| 1913 | -35.0 C (-31.0 F) |
| 1914 | -40.0 C (-40.0 F) |
| 1915 | -46.1 C (-51.0 F) |
| 1917 | -55.0 C (-67.0 F) |
| 1918 | -50.6 C (-59.1 F) |
| 1919 | -52.2 C (-62.0 F) |
| 1920 | -52.2 C (-62.0 F) |
| 1921 | -53.3 C (-63.9 F) |
| 1922 | -46.7 C (-52.1 F) |
| 1923 | -53.9 C (-65.0 F) |
| 1924 | -50.6 C (-59.1 F) |
| 1925 | -53.9 C (-65.0 F) |
| 1926 | -49.4 C (-56.9 F) |
| 1927 | -46.7 C (-52.1 F) |
| 1928 | -43.9 C (-47.0 F) |
| 1929 | -46.7 C (-52.1 F) |
| 1930 | -52.2 C (-62.0 F) |
| 1931 | -42.8 C (-45.0 F) |
| 1932 | -49.4 C (-56.9 F) |
| 1933 | -55.0 C (-67.0 F) |
| 1934 | -53.3 C (-63.9 F) |
| 1935 | -57.2 C (-71.0 F) |
| 1936 | -53.9 C (-65.0 F) |
| 1937 | -48.3 C (-54.9 F) |
| 1938 | -53.3 C (-63.9 F) |
| 1939 | -51.1 C (-60.0 F) |
| 1940 | -53.9 C (-65.0 F) |
| 1941 | -53.9 C (-65.0 F) |
| 1942 | -42.8 C (-45.0 F) |
| 1943 | -46.7 C (-52.1 F) |
| 1944 | -50.0 C (-58.0 F) |
| 1945 | -48.9 C (-56.0 F) |
| 1946 | -55.0 C (-67.0 F) |
| 1947 | -55.6 C (-68.1 F) |
| 1948 | -52.2 C (-62.0 F) |
| 1949 | -48.9 C (-56.0 F) |
| 1950 | -52.8 C (-63.0 F) |
| 1951 | -56.1 C (-69.0 F) |
| 1952 | -54.4 C (-65.9 F) |
| 1953 | -54.4 C (-65.9 F) |
| 1954 | -54.4 C (-65.9 F) |
| 1955 | -53.3 C (-63.9 F) |
| 1956 | -51.7 C (-61.1 F) |
| 1957 | -50.0 C (-58.0 F) |
| 1958 | -48.3 C (-54.9 F) |
| 1959 | -51.1 C (-60.0 F) |
| 1960 | -52.8 C (-63.0 F) |
| 1961 | -53.9 C (-65.0 F) |
| 1962 | -51.1 C (-60.0 F) |
| 1963 | -50.0 C (-58.0 F) |
| 1965 | -52.2 C (-62.0 F) |
| 1966 | -52.2 C (-62.0 F) |
| 1967 | -39.4 C (-38.9 F) |
| 1968 | -55.0 C (-67.0 F) |
| 1969 | -52.8 C (-63.0 F) |
| 1970 | -22.2 C (-8.0 F) |
| 1971 | -44.4 C (-47.9 F) |
| 1972 | -53.9 C (-65.0 F) |
| 1984 | -46.7 C (-52.1 F) |
| 1985 | -48.3 C (-54.9 F) |
| 1986 | -46.1 C (-51.0 F) |
| 1987 | -43.9 C (-47.0 F) |
| 1988 | -44.4 C (-47.9 F) |
| 1989 | -55.0 C (-67.0 F) |
| 1990 | -51.1 C (-60.0 F) |
| 2024 | -42.8 C (-45.0 F) |
| 2025 | -46.1 C (-51.0 F) |
| 2026 | -48.3 C (-54.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1899 | 27.2 mm (1.1 in) |
| 1900 | 8.9 mm (0.35 in) |
| 1901 | 39.4 mm (1.6 in) |
| 1902 | 20.3 mm (0.8 in) |
| 1903 | 18.5 mm (0.7 in) |
| 1904 | 22.9 mm (0.9 in) |
| 1909 | 19.1 mm (0.8 in) |
| 1910 | 8.9 mm (0.35 in) |
| 1911 | 5.1 mm (0.20 in) |
| 1913 | n/a |
| 1914 | 0.0 mm (0.00 in) |
| 1915 | 7.6 mm (0.30 in) |
| 1917 | 2.5 mm (0.10 in) |
| 1918 | 10.2 mm (0.4 in) |
| 1919 | 6.4 mm (0.25 in) |
| 1920 | 5.1 mm (0.20 in) |
| 1921 | 7.1 mm (0.28 in) |
| 1922 | 8.9 mm (0.35 in) |
| 1923 | 8.4 mm (0.33 in) |
| 1924 | 16.5 mm (0.6 in) |
| 1925 | 15.0 mm (0.6 in) |
| 1926 | 10.9 mm (0.4 in) |
| 1927 | 24.4 mm (1.0 in) |
| 1928 | 31.8 mm (1.3 in) |
| 1929 | 18.3 mm (0.7 in) |
| 1930 | 16.8 mm (0.7 in) |
| 1931 | 16.8 mm (0.7 in) |
| 1932 | 11.2 mm (0.4 in) |
| 1933 | 7.6 mm (0.30 in) |
| 1934 | 2.0 mm (0.08 in) |
| 1935 | 8.9 mm (0.35 in) |
| 1936 | 26.9 mm (1.1 in) |
| 1937 | 17.0 mm (0.7 in) |
| 1938 | 9.1 mm (0.36 in) |
| 1939 | 16.5 mm (0.6 in) |
| 1940 | 18.8 mm (0.7 in) |
| 1941 | 9.7 mm (0.38 in) |
| 1942 | 6.1 mm (0.24 in) |
| 1943 | 25.4 mm (1.0 in) |
| 1944 | 18.0 mm (0.7 in) |
| 1945 | 13.0 mm (0.5 in) |
| 1946 | 21.3 mm (0.8 in) |
| 1947 | 14.5 mm (0.6 in) |
| 1948 | 11.9 mm (0.5 in) |
| 1949 | 7.4 mm (0.29 in) |
| 1950 | 7.9 mm (0.31 in) |
| 1951 | 10.9 mm (0.4 in) |
| 1952 | 12.2 mm (0.5 in) |
| 1953 | 14.5 mm (0.6 in) |
| 1954 | 11.9 mm (0.5 in) |
| 1955 | 15.2 mm (0.6 in) |
| 1956 | 12.7 mm (0.5 in) |
| 1957 | 7.9 mm (0.31 in) |
| 1958 | 15.5 mm (0.6 in) |
| 1959 | 7.9 mm (0.31 in) |
| 1960 | 35.6 mm (1.4 in) |
| 1961 | 19.3 mm (0.8 in) |
| 1962 | 38.6 mm (1.5 in) |
| 1963 | 15.5 mm (0.6 in) |
| 1965 | 3.6 mm (0.14 in) |
| 1966 | 3.6 mm (0.14 in) |
| 1967 | 10.2 mm (0.4 in) |
| 1968 | 25.4 mm (1.0 in) |
| 1969 | 5.8 mm (0.23 in) |
| 1970 | 0.0 mm (0.00 in) |
| 1971 | 14.5 mm (0.6 in) |
| 1972 | 5.1 mm (0.20 in) |
| 1984 | 2.0 mm (0.08 in) |
| 1985 | 7.6 mm (0.30 in) |
| 1986 | 11.2 mm (0.4 in) |
| 1987 | 26.2 mm (1.0 in) |
| 1988 | 8.1 mm (0.32 in) |
| 1989 | 19.8 mm (0.8 in) |
| 1990 | 4.3 mm (0.17 in) |
| 2024 | 12.7 mm (0.5 in) |
| 2025 | 10.7 mm (0.4 in) |
| 2026 | 27.7 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1899 | 10.4 mm (0.4 in) |
| 1900 | 17.0 mm (0.7 in) |
| 1901 | 45.3 mm (1.8 in) |
| 1902 | 38.6 mm (1.5 in) |
| 1903 | 40.4 mm (1.6 in) |
| 1904 | 56.0 mm (2.2 in) |
| 1909 | n/a |
| 1910 | n/a |
| 1911 | 5.1 mm (0.20 in) |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | 11.4 mm (0.4 in) |
| 1917 | 3.1 mm (0.12 in) |
| 1918 | 17.0 mm (0.7 in) |
| 1919 | 12.2 mm (0.5 in) |
| 1920 | 14.0 mm (0.6 in) |
| 1921 | 9.6 mm (0.38 in) |
| 1922 | 25.0 mm (1.0 in) |
| 1923 | 15.7 mm (0.6 in) |
| 1924 | 24.4 mm (1.0 in) |
| 1925 | 23.2 mm (0.9 in) |
| 1926 | 14.4 mm (0.6 in) |
| 1927 | 27.4 mm (1.1 in) |
| 1928 | 54.2 mm (2.1 in) |
| 1929 | 28.5 mm (1.1 in) |
| 1930 | 25.9 mm (1.0 in) |
| 1931 | 23.9 mm (0.9 in) |
| 1932 | 24.4 mm (1.0 in) |
| 1933 | 11.6 mm (0.5 in) |
| 1934 | 4.0 mm (0.16 in) |
| 1935 | 15.0 mm (0.6 in) |
| 1936 | 60.7 mm (2.4 in) |
| 1937 | 22.7 mm (0.9 in) |
| 1938 | 18.0 mm (0.7 in) |
| 1939 | 20.3 mm (0.8 in) |
| 1940 | 22.6 mm (0.9 in) |
| 1941 | 14.8 mm (0.6 in) |
| 1942 | 7.6 mm (0.30 in) |
| 1943 | 47.7 mm (1.9 in) |
| 1944 | 33.8 mm (1.3 in) |
| 1945 | 29.8 mm (1.2 in) |
| 1946 | 39.3 mm (1.5 in) |
| 1947 | 23.1 mm (0.9 in) |
| 1948 | 16.0 mm (0.6 in) |
| 1949 | 11.3 mm (0.4 in) |
| 1950 | 8.2 mm (0.32 in) |
| 1951 | 25.6 mm (1.0 in) |
| 1952 | 12.2 mm (0.5 in) |
| 1953 | 17.9 mm (0.7 in) |
| 1954 | 20.3 mm (0.8 in) |
| 1955 | 25.9 mm (1.0 in) |
| 1956 | 17.0 mm (0.7 in) |
| 1957 | 9.7 mm (0.38 in) |
| 1958 | 20.9 mm (0.8 in) |
| 1959 | 19.0 mm (0.7 in) |
| 1960 | 40.3 mm (1.6 in) |
| 1961 | 32.5 mm (1.3 in) |
| 1962 | 41.2 mm (1.6 in) |
| 1963 | 32.2 mm (1.3 in) |
| 1965 | 7.9 mm (0.31 in) |
| 1966 | 7.9 mm (0.31 in) |
| 1967 | 10.2 mm (0.4 in) |
| 1968 | 25.4 mm (1.0 in) |
| 1969 | 6.1 mm (0.24 in) |
| 1970 | 0.0 mm (0.00 in) |
| 1971 | 25.9 mm (1.0 in) |
| 1972 | 2.5 mm (0.10 in) |
| 1984 | 4.9 mm (0.19 in) |
| 1985 | 12.5 mm (0.5 in) |
| 1986 | 13.5 mm (0.5 in) |
| 1987 | 29.5 mm (1.2 in) |
| 1988 | 13.7 mm (0.5 in) |
| 1989 | 38.1 mm (1.5 in) |
| 1990 | 8.6 mm (0.34 in) |
| 2024 | 14.2 mm (0.6 in) |
| 2025 | 21.7 mm (0.9 in) |
| 2026 | 28.7 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1899 | 28 days |
| 1900 | 43 days |
| 1901 | 27 days |
| 1902 | 17 days |
| 1903 | 34 days |
| 1904 | 26 days |
| 1909 | n/a |
| 1910 | 1 day |
| 1911 | 14 days |
| 1913 | n/a |
| 1914 | 1 day |
| 1915 | 30 days |
| 1917 | 41 days |
| 1918 | 59 days |
| 1919 | 62 days |
| 1920 | 39 days |
| 1921 | 43 days |
| 1922 | 62 days |
| 1923 | 51 days |
| 1924 | 86 days |
| 1925 | 41 days |
| 1926 | 63 days |
| 1927 | 63 days |
| 1928 | 33 days |
| 1929 | 46 days |
| 1930 | 49 days |
| 1931 | 56 days |
| 1932 | 88 days |
| 1933 | 111 days |
| 1934 | 22 days |
| 1935 | 34 days |
| 1936 | 103 days |
| 1937 | 24 days |
| 1938 | 93 days |
| 1939 | 73 days |
| 1940 | 100 days |
| 1941 | 41 days |
| 1942 | 27 days |
| 1943 | 30 days |
| 1944 | 35 days |
| 1945 | 38 days |
| 1946 | 25 days |
| 1947 | 41 days |
| 1948 | 35 days |
| 1949 | 50 days |
| 1950 | 92 days |
| 1951 | 70 days |
| 1952 | 70 days |
| 1953 | 101 days |
| 1954 | 68 days |
| 1955 | 32 days |
| 1956 | 27 days |
| 1957 | 51 days |
| 1958 | 42 days |
| 1959 | 25 days |
| 1960 | 57 days |
| 1961 | 39 days |
| 1962 | 25 days |
| 1963 | 45 days |
| 1965 | 12 days |
| 1966 | 12 days |
| 1967 | 35 days |
| 1968 | 40 days |
| 1969 | 54 days |
| 1970 | 61 days |
| 1971 | 34 days |
| 1972 | 59 days |
| 1984 | 21 days |
| 1985 | 30 days |
| 1986 | 57 days |
| 1987 | 77 days |
| 1988 | 76 days |
| 1989 | 46 days |
| 1990 | 23 days |
| 2024 | 21 days |
| 2025 | 47 days |
| 2026 | 53 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
39 years with a frostAcross 39 years with a frost, the median last spring frost at Ft Yukon falls on 25 May and the median first autumn frost on 25 August, which leaves a median of 92 days between them.
Fitted over all years, the growing season changes by +3.5 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1931 to 1989) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 25 May | n/a | 24 May | n/a | -1.5 days per decade |
| First autumn frost | 25 August | n/a | 27 August | n/a | +1.9 days per decade |
| Growing days | 92 days | n/a | 94 days | n/a | +3.5 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
40 years, 1918 to 1989A day with at least 13.0 mm (0.5 in) of rain is expected about once in 2 years. A day with at least 45.2 mm (1.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 13.0 mm (0.5 in) | |
| 5 years | 19.5 mm (0.8 in) | |
| 10 years | 24.6 mm (1.0 in) | |
| 25 years | 31.9 mm (1.3 in) | |
| 50 years | 38.2 mm (1.5 in) | Longer than the 40 years of record |
| 100 years | 45.2 mm (1.8 in) | Longer than the 40 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, 40 years of values from 1918 to 1989.
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: 38.6 mm (1.5 in) in 1962; 35.6 mm (1.4 in) in 1960; 31.8 mm (1.3 in) in 1928.
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).