Lake Yellowstone Weather Records (USC00485345)
Record envelope, standing records and threshold days for Lake Yellowstone (USC00485345), Wyoming, United States, with 123 years of record.
Key Facts for Lake Yellowstone
- Lake Yellowstone (USC00485345) is a weather station in Wyoming, United States at 44.56 latitude and -110.40 longitude, 2,406 m (7,892 ft) above sea level.
- The station reports from 1904 to 2026, 123 years of record.
- 1,464 records set at Lake Yellowstone still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Lake Yellowstone set a daily record high maximum temperature of 20.6 C (69.1 F) on 9 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Wyoming, United States, 44.56 latitude, -110.40 longitude.
- Elevation: 2,406 m (7,892 ft).
- Period of record: 1904 to 2026, 123 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
11 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) | -46.1 C (-51.0 F) | 3.3 C (37.9 F) | -25.0 C (-13.0 F) |
| Feb | 9.4 C (48.9 F) | -48.9 C (-56.0 F) | 8.3 C (46.9 F) | -28.3 C (-18.9 F) |
| Mar | 15.6 C (60.1 F) | -41.7 C (-43.1 F) | 15.0 C (59.0 F) | -20.6 C (-5.1 F) |
| Apr | 22.8 C (73.0 F) | -33.9 C (-29.0 F) | 17.2 C (63.0 F) | -14.4 C (6.1 F) |
| May | 25.6 C (78.1 F) | -23.3 C (-9.9 F) | 25.6 C (78.1 F) | -8.9 C (16.0 F) |
| Jun | 28.9 C (84.0 F) | -10.0 C (14.0 F) | 22.2 C (72.0 F) | -1.7 C (28.9 F) |
| Jul | 33.3 C (91.9 F) | -6.7 C (19.9 F) | 31.1 C (88.0 F) | 1.7 C (35.1 F) |
| Aug | 32.8 C (91.0 F) | -10.6 C (12.9 F) | 28.9 C (84.0 F) | 0.6 C (33.1 F) |
| Sep | 31.7 C (89.1 F) | -20.6 C (-5.1 F) | 21.7 C (71.1 F) | -2.2 C (28.0 F) |
| Oct | 24.4 C (75.9 F) | -27.2 C (-17.0 F) | 22.2 C (72.0 F) | 0.0 C (32.0 F) |
| Nov | 17.2 C (63.0 F) | -34.4 C (-29.9 F) | n/a | n/a |
| Dec | 11.1 C (52.0 F) | -44.4 C (-47.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1904 | 20 |
| 1905 | 17 |
| 1906 | 18 |
| 1907 | 7 |
| 1908 | 12 |
| 1909 | 14 |
| 1910 | 15 |
| 1911 | 12 |
| 1912 | 10 |
| 1913 | 17 |
| 1914 | 23 |
| 1915 | 18 |
| 1916 | 28 |
| 1917 | 29 |
| 1918 | 3 |
| 1919 | 7 |
| 1920 | 10 |
| 1921 | 11 |
| 1922 | 8 |
| 1923 | 2 |
| 1924 | 12 |
| 1925 | 3 |
| 1926 | 16 |
| 1927 | 22 |
| 1928 | 14 |
| 1929 | 14 |
| 1930 | 12 |
| 1931 | 8 |
| 1932 | 9 |
| 1933 | 22 |
| 1934 | 21 |
| 1935 | 16 |
| 1936 | 21 |
| 1937 | 3 |
| 1938 | 4 |
| 1939 | 9 |
| 1940 | 9 |
| 1941 | 7 |
| 1942 | 11 |
| 1943 | 10 |
| 1944 | 1 |
| 1945 | 12 |
| 1946 | 4 |
| 1947 | 12 |
| 1948 | 24 |
| 1949 | 15 |
| 1950 | 12 |
| 1951 | 13 |
| 1952 | 6 |
| 1953 | 7 |
| 1954 | 19 |
| 1955 | 17 |
| 1956 | 19 |
| 1957 | 5 |
| 1958 | 10 |
| 1959 | 14 |
| 1960 | 9 |
| 1961 | 12 |
| 1962 | 23 |
| 1963 | 13 |
| 1964 | 6 |
| 1965 | 11 |
| 1966 | 6 |
| 1967 | 8 |
| 1968 | 6 |
| 1969 | 13 |
| 1970 | 7 |
| 1971 | 10 |
| 1972 | 14 |
| 1973 | 6 |
| 1974 | 18 |
| 1975 | 24 |
| 1976 | 12 |
| 1977 | 3 |
| 1978 | 10 |
| 1979 | 12 |
| 1980 | 17 |
| 1981 | 11 |
| 1982 | 16 |
| 1983 | 9 |
| 1984 | 12 |
| 1985 | 29 |
| 1986 | 21 |
| 1987 | 17 |
| 1988 | 11 |
| 1989 | 8 |
| 1990 | 21 |
| 1991 | 9 |
| 1992 | 8 |
| 1993 | 10 |
| 1994 | 2 |
| 1995 | 7 |
| 1996 | 13 |
| 1997 | 6 |
| 1998 | 5 |
| 1999 | 11 |
| 2000 | 3 |
| 2001 | 9 |
| 2002 | 10 |
| 2003 | 14 |
| 2004 | 6 |
| 2005 | 9 |
| 2006 | 13 |
| 2007 | 9 |
| 2008 | 11 |
| 2009 | 5 |
| 2010 | 12 |
| 2011 | 4 |
| 2012 | 12 |
| 2013 | 23 |
| 2014 | 11 |
| 2015 | 16 |
| 2016 | 14 |
| 2017 | 11 |
| 2018 | 5 |
| 2019 | 14 |
| 2020 | 13 |
| 2021 | 10 |
| 2022 | 17 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 13 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1951-03-05 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
| 1969-08-10 | Record high maximum temperature | Record high maximum temperature 32.8 C (91.0 F) |
| 2003-07-12 | Record high maximum temperature | Record high maximum temperature 33.3 C (91.9 F) |
Wettest Day of Each Month
Oct: 54.1 mm (2.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 43.2 mm (1.7 in) | 22 January 1943 |
| Feb | 38.1 mm (1.5 in) | 17 February 1983 |
| Mar | 30.5 mm (1.2 in) | 12 March 1906 |
| Apr | 28.4 mm (1.1 in) | 26 April 1921 |
| May | 43.2 mm (1.7 in) | 26 May 1908 |
| Jun | 38.1 mm (1.5 in) | 2 June 1988 |
| Jul | 33.5 mm (1.3 in) | 11 July 1952 |
| Aug | 35.6 mm (1.4 in) | 8 August 1961 |
| Sep | 41.4 mm (1.6 in) | 15 September 1914 |
| Oct | 54.1 mm (2.1 in) | 14 October 1908 |
| Nov | 44.5 mm (1.8 in) | 5 November 1941 |
| Dec | 39.6 mm (1.6 in) | 11 December 1919 |
Period of Record Coverage
1904 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1904 | 335 | 92% | Yes |
| 1905 | 344 | 94% | Yes |
| 1906 | 316 | 87% | No |
| 1907 | 263 | 72% | No |
| 1908 | 344 | 94% | Yes |
| 1909 | 356 | 98% | Yes |
| 1910 | 361 | 99% | Yes |
| 1911 | 359 | 98% | Yes |
| 1912 | 363 | 99% | Yes |
| 1913 | 345 | 95% | Yes |
| 1914 | 361 | 99% | Yes |
| 1915 | 360 | 99% | Yes |
| 1916 | 298 | 81% | No |
| 1917 | 155 | 42% | No |
| 1918 | 100 | 27% | No |
| 1919 | 47 | 13% | No |
| 1920 | 308 | 84% | No |
| 1921 | 310 | 85% | No |
| 1922 | 289 | 79% | No |
| 1923 | 304 | 83% | No |
| 1924 | 351 | 96% | Yes |
| 1925 | 347 | 95% | Yes |
| 1926 | 355 | 97% | Yes |
| 1927 | 344 | 94% | Yes |
| 1928 | 357 | 98% | Yes |
| 1929 | 310 | 85% | No |
| 1930 | 354 | 97% | Yes |
| 1931 | 303 | 83% | No |
| 1932 | 363 | 99% | Yes |
| 1933 | 354 | 97% | Yes |
| 1934 | 361 | 99% | Yes |
| 1935 | 361 | 99% | Yes |
| 1936 | 331 | 90% | Yes |
| 1937 | 233 | 64% | No |
| 1938 | 201 | 55% | No |
| 1939 | 274 | 75% | No |
| 1940 | 363 | 99% | Yes |
| 1941 | 323 | 88% | No |
| 1942 | 318 | 87% | No |
| 1943 | 218 | 60% | No |
| 1944 | 196 | 54% | No |
| 1945 | 361 | 99% | Yes |
| 1946 | 359 | 98% | Yes |
| 1947 | 330 | 90% | Yes |
| 1948 | 336 | 92% | Yes |
| 1949 | 358 | 98% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 355 | 97% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 350 | 96% | Yes |
| 1954 | 360 | 99% | Yes |
| 1955 | 357 | 98% | Yes |
| 1956 | 360 | 98% | Yes |
| 1957 | 358 | 98% | Yes |
| 1958 | 332 | 91% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 356 | 98% | Yes |
| 1963 | 362 | 99% | Yes |
| 1964 | 346 | 95% | Yes |
| 1965 | 328 | 90% | No |
| 1966 | 342 | 94% | Yes |
| 1967 | 344 | 94% | Yes |
| 1968 | 270 | 74% | No |
| 1969 | 341 | 93% | Yes |
| 1970 | 274 | 75% | No |
| 1971 | 291 | 80% | No |
| 1972 | 361 | 99% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 362 | 99% | Yes |
| 1975 | 361 | 99% | Yes |
| 1976 | 316 | 86% | No |
| 1977 | 160 | 44% | No |
| 1978 | 137 | 38% | No |
| 1979 | 353 | 97% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 358 | 98% | Yes |
| 1983 | 347 | 95% | Yes |
| 1984 | 331 | 90% | Yes |
| 1985 | 358 | 98% | Yes |
| 1986 | 313 | 86% | No |
| 1987 | 340 | 93% | Yes |
| 1988 | 355 | 97% | Yes |
| 1989 | 342 | 94% | Yes |
| 1990 | 360 | 99% | Yes |
| 1991 | 352 | 96% | Yes |
| 1992 | 356 | 97% | Yes |
| 1993 | 354 | 97% | Yes |
| 1994 | 350 | 96% | Yes |
| 1995 | 346 | 95% | Yes |
| 1996 | 322 | 88% | No |
| 1997 | 321 | 88% | No |
| 1998 | 318 | 87% | No |
| 1999 | 298 | 82% | No |
| 2000 | 300 | 82% | No |
| 2001 | 299 | 82% | No |
| 2002 | 332 | 91% | Yes |
| 2003 | 323 | 88% | No |
| 2004 | 312 | 85% | No |
| 2005 | 294 | 81% | No |
| 2006 | 314 | 86% | No |
| 2007 | 233 | 64% | No |
| 2008 | 301 | 82% | No |
| 2009 | 307 | 84% | No |
| 2010 | 330 | 90% | Yes |
| 2011 | 293 | 80% | No |
| 2012 | 363 | 99% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 362 | 99% | Yes |
| 2019 | 364 | 100% | Yes |
| 2020 | 299 | 82% | No |
| 2021 | 362 | 99% | Yes |
| 2022 | 355 | 97% | Yes |
| 2023 | 279 | 76% | No |
| 2024 | 253 | 69% | No |
| 2025 | 309 | 85% | No |
| 2026 | 217 | 59% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 9 October 2026 | Lake Yellowstone, US | daily high max (Provisional) | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 116 years | 42 of 100 (Notable) |
| 8 October 2026 | Lake Yellowstone, US | daily high max (Provisional) | 21.1 C (70.0 F) | 0.5 C (0.9 F) | 72 years | 31 of 100 (Routine) |
| 7 October 2026 | Lake Yellowstone, US | daily high max (Tie, Provisional) | 21.1 C (70.0 F) | tie | 120 years | 10 of 100 (Routine) |
| 6 October 2026 | Lake Yellowstone, US | daily high max (Provisional) | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 120 years | 42 of 100 (Notable) |
| 12 August 2026 | Lake Yellowstone, US | daily high min | 11.7 C (53.1 F) | 0.6 C (1.1 F) | 4 years | 12 of 100 (Routine) |
| 23 July 2026 | Lake Yellowstone, US | daily high min | 12.2 C (54.0 F) | 1.1 C (2.0 F) | 44 years | 26 of 100 (Routine) |
| 22 July 2026 | Lake Yellowstone, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 20 years | 4 of 100 (Routine) |
| 17 July 2026 | Lake Yellowstone, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 19 years | 3 of 100 (Routine) |
| 15 July 2026 | Lake Yellowstone, US | daily high max | 31.1 C (88.0 F) | 0.5 C (0.9 F) | 24 years | 18 of 100 (Routine) |
| 21 May 2026 | Lake Yellowstone, US | daily snowfall (Tie) | 10.2 cm (4.0 in) | tie | 99 years | 9 of 100 (Routine) |
| 14 May 2026 | Lake Yellowstone, US | daily high max | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 24 years | 20 of 100 (Routine) |
| 12 May 2026 | Lake Yellowstone, US | monthly high max (Tie) | 25.6 C (78.1 F) | tie | 22 years | 6 of 100 (Routine) |
| 25 April 2026 | Lake Yellowstone, US | daily low max (Tie) | -1.1 C (30.0 F) | tie | 40 years | 5 of 100 (Routine) |
| 18 April 2026 | Lake Yellowstone, US | daily low max | -2.2 C (28.0 F) | 0.5 C (0.9 F) | 84 years | 36 of 100 (Notable) |
| 26 March 2026 | Lake Yellowstone, US | monthly high min (Tie) | 1.1 C (34.0 F) | tie | 118 years | 12 of 100 (Routine) |
| 26 March 2026 | Lake Yellowstone, US | daily high max (Tie) | 12.2 C (54.0 F) | tie | 13 years | 3 of 100 (Routine) |
| 25 March 2026 | Lake Yellowstone, US | monthly high min (Tie) | 1.1 C (34.0 F) | tie | 118 years | 12 of 100 (Routine) |
| 21 March 2026 | Lake Yellowstone, US | daily high min | -2.2 C (28.0 F) | 1.1 C (2.0 F) | 116 years | 41 of 100 (Notable) |
| 21 March 2026 | Lake Yellowstone, US | daily high max | 15.0 C (59.0 F) | 2.8 C (5.0 F) | 65 years | 35 of 100 (Notable) |
| 20 March 2026 | Lake Yellowstone, US | daily high max | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 97 years | 40 of 100 (Notable) |
Climate Trend
64 complete years, 1909 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1909 | -0.5 C | -0.83 C |
| 1910 | 1.0 C | +0.68 C |
| 1911 | -1.5 C | -1.84 C |
| 1912 | -0.9 C | -1.22 C |
| 1914 | 1.3 C | +0.93 C |
| 1915 | 0.6 C | +0.26 C |
| 1924 | -0.7 C | -1.02 C |
| 1925 | 0.4 C | +0.07 C |
| 1926 | 0.7 C | +0.42 C |
| 1928 | 0.4 C | +0.05 C |
| 1930 | 0.3 C | -0.05 C |
| 1932 | -1.0 C | -1.36 C |
| 1933 | 0.6 C | +0.31 C |
| 1934 | 2.6 C | +2.30 C |
| 1935 | 0.4 C | +0.06 C |
| 1936 | 0.5 C | +0.17 C |
| 1940 | 1.8 C | +1.46 C |
| 1945 | -0.3 C | -0.59 C |
| 1946 | 0.4 C | +0.11 C |
| 1949 | 0.0 C | -0.35 C |
| 1950 | -0.3 C | -0.63 C |
| 1951 | -0.6 C | -0.96 C |
| 1952 | 0.0 C | -0.29 C |
| 1954 | 0.8 C | +0.50 C |
| 1955 | -0.8 C | -1.16 C |
| 1956 | 0.0 C | -0.28 C |
| 1957 | 0.3 C | -0.01 C |
| 1959 | 0.3 C | +0.01 C |
| 1960 | 0.6 C | +0.25 C |
| 1961 | 0.5 C | +0.18 C |
| 1962 | 0.6 C | +0.25 C |
| 1963 | 0.8 C | +0.44 C |
| 1966 | 0.5 C | +0.20 C |
| 1967 | 0.3 C | -0.06 C |
| 1969 | 0.9 C | +0.60 C |
| 1972 | -0.6 C | -0.97 C |
| 1973 | -0.6 C | -0.93 C |
| 1975 | -1.5 C | -1.86 C |
| 1979 | -0.4 C | -0.70 C |
| 1980 | 0.8 C | +0.49 C |
| 1981 | 1.1 C | +0.82 C |
| 1982 | -0.9 C | -1.19 C |
| 1983 | -0.2 C | -0.55 C |
| 1985 | -2.2 C | -2.57 C |
| 1988 | 0.4 C | +0.04 C |
| 1990 | 0.0 C | -0.34 C |
| 1991 | -0.2 C | -0.57 C |
| 1992 | 0.3 C | -0.04 C |
| 1993 | -1.2 C | -1.56 C |
| 1994 | 0.4 C | +0.05 C |
| 1995 | -0.1 C | -0.44 C |
| 1998 | 1.1 C | +0.79 C |
| 2003 | 1.0 C | +0.65 C |
| 2008 | 0.5 C | +0.17 C |
| 2012 | 2.0 C | +1.68 C |
| 2013 | 0.7 C | +0.34 C |
| 2014 | 1.0 C | +0.65 C |
| 2015 | 2.2 C | +1.88 C |
| 2016 | 2.0 C | +1.72 C |
| 2017 | 1.5 C | +1.16 C |
| 2018 | 1.3 C | +0.93 C |
| 2019 | 0.3 C | -0.01 C |
| 2021 | 1.8 C | +1.44 C |
| 2022 | 0.5 C | +0.18 C |
The annual mean temperature here has risen by 0.07 C (0.00 to 0.14) per decade over 1909 to 2022. In Fahrenheit: 0.13 F (0.00 to 0.25) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.07 C (0.00 to 0.14) per decade | 0.13 F (0.00 to 0.25) per decade | 1909 to 2022 | 64 | Rise |
| Mean daily maximum | 0.01 C (-0.06 to 0.08) per decade | 0.01 F (-0.11 to 0.14) per decade | 1909 to 2022 | 64 | Not clearly different from zero |
| Mean daily minimum | 0.13 C (0.04 to 0.22) per decade | 0.2 F (0.1 to 0.4) per decade | 1909 to 2022 | 64 | Rise |
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 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 33.3 C (91.9 F) | 2003 | 27.8 C (82.0 F) | 123 |
| Coldest night (TNn) | -48.9 C (-56.0 F) | 1933 | -37.2 C (-35.0 F) | 123 |
| Wettest day (Rx1day) | 54.1 mm (2.1 in) | 1908 | 24.4 mm (1.0 in) | 123 |
| Wettest five days (Rx5day) | 119.8 mm (4.7 in) | 1943 | 42.6 mm (1.7 in) | 123 |
| Longest dry spell (CDD) | 54 days | 1939 | 21 days | 123 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1904 | 30.0 C (86.0 F) |
| 1905 | 31.7 C (89.1 F) |
| 1906 | 28.9 C (84.0 F) |
| 1907 | 22.2 C (72.0 F) |
| 1908 | 25.6 C (78.1 F) |
| 1909 | 31.7 C (89.1 F) |
| 1910 | 28.9 C (84.0 F) |
| 1911 | 26.1 C (79.0 F) |
| 1912 | 26.1 C (79.0 F) |
| 1913 | 26.7 C (80.1 F) |
| 1914 | 31.7 C (89.1 F) |
| 1915 | 27.2 C (81.0 F) |
| 1916 | 27.8 C (82.0 F) |
| 1917 | 26.1 C (79.0 F) |
| 1918 | 10.6 C (51.1 F) |
| 1919 | 6.7 C (44.1 F) |
| 1920 | 26.1 C (79.0 F) |
| 1921 | 28.9 C (84.0 F) |
| 1922 | 27.8 C (82.0 F) |
| 1923 | 27.2 C (81.0 F) |
| 1924 | 27.2 C (81.0 F) |
| 1925 | 28.3 C (82.9 F) |
| 1926 | 27.8 C (82.0 F) |
| 1927 | 28.3 C (82.9 F) |
| 1928 | 27.2 C (81.0 F) |
| 1929 | 28.9 C (84.0 F) |
| 1930 | 28.3 C (82.9 F) |
| 1931 | 30.0 C (86.0 F) |
| 1932 | 27.8 C (82.0 F) |
| 1933 | 29.4 C (84.9 F) |
| 1934 | 27.2 C (81.0 F) |
| 1935 | 29.4 C (84.9 F) |
| 1936 | 29.4 C (84.9 F) |
| 1937 | 28.3 C (82.9 F) |
| 1938 | 26.7 C (80.1 F) |
| 1939 | 26.7 C (80.1 F) |
| 1940 | 30.0 C (86.0 F) |
| 1941 | 26.1 C (79.0 F) |
| 1942 | 27.8 C (82.0 F) |
| 1943 | 26.7 C (80.1 F) |
| 1944 | 25.6 C (78.1 F) |
| 1945 | 26.1 C (79.0 F) |
| 1946 | 28.3 C (82.9 F) |
| 1947 | 26.7 C (80.1 F) |
| 1948 | 26.1 C (79.0 F) |
| 1949 | 28.3 C (82.9 F) |
| 1950 | 28.3 C (82.9 F) |
| 1951 | 26.7 C (80.1 F) |
| 1952 | 24.4 C (75.9 F) |
| 1953 | 26.1 C (79.0 F) |
| 1954 | 27.2 C (81.0 F) |
| 1955 | 31.7 C (89.1 F) |
| 1956 | 31.7 C (89.1 F) |
| 1957 | 26.7 C (80.1 F) |
| 1958 | 26.7 C (80.1 F) |
| 1959 | 27.2 C (81.0 F) |
| 1960 | 29.4 C (84.9 F) |
| 1961 | 28.9 C (84.0 F) |
| 1962 | 25.6 C (78.1 F) |
| 1963 | 27.2 C (81.0 F) |
| 1964 | 27.2 C (81.0 F) |
| 1965 | 25.0 C (77.0 F) |
| 1966 | 28.3 C (82.9 F) |
| 1967 | 26.1 C (79.0 F) |
| 1968 | 26.1 C (79.0 F) |
| 1969 | 32.8 C (91.0 F) |
| 1970 | 29.4 C (84.9 F) |
| 1971 | 28.9 C (84.0 F) |
| 1972 | 28.3 C (82.9 F) |
| 1973 | 26.7 C (80.1 F) |
| 1974 | 27.8 C (82.0 F) |
| 1975 | 27.8 C (82.0 F) |
| 1976 | 27.2 C (81.0 F) |
| 1977 | 31.1 C (88.0 F) |
| 1978 | 27.8 C (82.0 F) |
| 1979 | 28.3 C (82.9 F) |
| 1980 | 27.2 C (81.0 F) |
| 1981 | 26.7 C (80.1 F) |
| 1982 | 27.8 C (82.0 F) |
| 1983 | 27.8 C (82.0 F) |
| 1984 | 26.1 C (79.0 F) |
| 1985 | 28.3 C (82.9 F) |
| 1986 | 26.1 C (79.0 F) |
| 1987 | 26.1 C (79.0 F) |
| 1988 | 29.4 C (84.9 F) |
| 1989 | 30.0 C (86.0 F) |
| 1990 | 27.8 C (82.0 F) |
| 1991 | 27.2 C (81.0 F) |
| 1992 | 26.7 C (80.1 F) |
| 1993 | 23.3 C (73.9 F) |
| 1994 | 27.8 C (82.0 F) |
| 1995 | 27.2 C (81.0 F) |
| 1996 | 27.8 C (82.0 F) |
| 1997 | 26.1 C (79.0 F) |
| 1998 | 28.9 C (84.0 F) |
| 1999 | 26.1 C (79.0 F) |
| 2000 | 30.6 C (87.1 F) |
| 2001 | 28.9 C (84.0 F) |
| 2002 | 30.6 C (87.1 F) |
| 2003 | 33.3 C (91.9 F) |
| 2004 | 26.7 C (80.1 F) |
| 2005 | 29.4 C (84.9 F) |
| 2006 | 29.4 C (84.9 F) |
| 2007 | 29.4 C (84.9 F) |
| 2008 | 30.6 C (87.1 F) |
| 2009 | 28.3 C (82.9 F) |
| 2010 | 27.8 C (82.0 F) |
| 2011 | 27.8 C (82.0 F) |
| 2012 | 27.8 C (82.0 F) |
| 2013 | 27.8 C (82.0 F) |
| 2014 | 26.1 C (79.0 F) |
| 2015 | 27.8 C (82.0 F) |
| 2016 | 27.2 C (81.0 F) |
| 2017 | 27.8 C (82.0 F) |
| 2018 | 30.0 C (86.0 F) |
| 2019 | 26.7 C (80.1 F) |
| 2020 | 25.6 C (78.1 F) |
| 2021 | 30.0 C (86.0 F) |
| 2022 | 27.8 C (82.0 F) |
| 2023 | 28.9 C (84.0 F) |
| 2024 | 28.9 C (84.0 F) |
| 2025 | 27.8 C (82.0 F) |
| 2026 | 31.1 C (88.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1904 | -32.2 C (-26.0 F) |
| 1905 | -36.1 C (-33.0 F) |
| 1906 | -39.4 C (-38.9 F) |
| 1907 | -28.9 C (-20.0 F) |
| 1908 | -43.9 C (-47.0 F) |
| 1909 | -36.1 C (-33.0 F) |
| 1910 | -37.8 C (-36.0 F) |
| 1911 | -40.0 C (-40.0 F) |
| 1912 | -35.0 C (-31.0 F) |
| 1913 | -44.4 C (-47.9 F) |
| 1914 | -45.6 C (-50.1 F) |
| 1915 | -38.3 C (-36.9 F) |
| 1916 | -37.8 C (-36.0 F) |
| 1917 | -41.7 C (-43.1 F) |
| 1918 | -41.7 C (-43.1 F) |
| 1919 | -39.4 C (-38.9 F) |
| 1920 | -33.9 C (-29.0 F) |
| 1921 | -37.2 C (-35.0 F) |
| 1922 | -41.1 C (-42.0 F) |
| 1923 | -37.2 C (-35.0 F) |
| 1924 | -44.4 C (-47.9 F) |
| 1925 | -33.9 C (-29.0 F) |
| 1926 | -37.2 C (-35.0 F) |
| 1927 | -43.3 C (-45.9 F) |
| 1928 | -36.1 C (-33.0 F) |
| 1929 | -40.0 C (-40.0 F) |
| 1930 | -45.0 C (-49.0 F) |
| 1931 | -31.1 C (-24.0 F) |
| 1932 | -36.7 C (-34.1 F) |
| 1933 | -48.9 C (-56.0 F) |
| 1934 | -25.6 C (-14.1 F) |
| 1935 | -35.0 C (-31.0 F) |
| 1936 | -40.0 C (-40.0 F) |
| 1937 | -41.7 C (-43.1 F) |
| 1938 | -31.7 C (-25.1 F) |
| 1939 | -23.3 C (-9.9 F) |
| 1940 | -40.0 C (-40.0 F) |
| 1941 | -28.9 C (-20.0 F) |
| 1942 | -41.7 C (-43.1 F) |
| 1943 | -46.1 C (-51.0 F) |
| 1944 | -28.3 C (-18.9 F) |
| 1945 | -35.0 C (-31.0 F) |
| 1946 | -31.7 C (-25.1 F) |
| 1947 | -37.8 C (-36.0 F) |
| 1948 | -42.8 C (-45.0 F) |
| 1949 | -40.6 C (-41.1 F) |
| 1950 | -38.3 C (-36.9 F) |
| 1951 | -45.0 C (-49.0 F) |
| 1952 | -36.1 C (-33.0 F) |
| 1953 | -36.1 C (-33.0 F) |
| 1954 | -34.4 C (-29.9 F) |
| 1955 | -37.2 C (-35.0 F) |
| 1956 | -43.3 C (-45.9 F) |
| 1957 | -41.1 C (-42.0 F) |
| 1958 | -33.3 C (-27.9 F) |
| 1959 | -36.7 C (-34.1 F) |
| 1960 | -37.8 C (-36.0 F) |
| 1961 | -38.3 C (-36.9 F) |
| 1962 | -43.9 C (-47.0 F) |
| 1963 | -45.6 C (-50.1 F) |
| 1964 | -38.9 C (-38.0 F) |
| 1965 | -42.2 C (-44.0 F) |
| 1966 | -36.1 C (-33.0 F) |
| 1967 | -33.9 C (-29.0 F) |
| 1968 | -37.8 C (-36.0 F) |
| 1969 | -32.2 C (-26.0 F) |
| 1970 | -38.3 C (-36.9 F) |
| 1971 | -38.3 C (-36.9 F) |
| 1972 | -41.1 C (-42.0 F) |
| 1973 | -39.4 C (-38.9 F) |
| 1974 | -40.0 C (-40.0 F) |
| 1975 | -41.1 C (-42.0 F) |
| 1976 | -37.8 C (-36.0 F) |
| 1977 | -37.2 C (-35.0 F) |
| 1978 | -41.1 C (-42.0 F) |
| 1979 | -41.1 C (-42.0 F) |
| 1980 | -40.0 C (-40.0 F) |
| 1981 | -41.1 C (-42.0 F) |
| 1982 | -42.2 C (-44.0 F) |
| 1983 | -41.1 C (-42.0 F) |
| 1984 | -33.3 C (-27.9 F) |
| 1985 | -45.6 C (-50.1 F) |
| 1986 | -32.2 C (-26.0 F) |
| 1987 | -31.7 C (-25.1 F) |
| 1988 | -37.2 C (-35.0 F) |
| 1989 | -38.9 C (-38.0 F) |
| 1990 | -41.7 C (-43.1 F) |
| 1991 | -39.4 C (-38.9 F) |
| 1992 | -33.3 C (-27.9 F) |
| 1993 | -33.3 C (-27.9 F) |
| 1994 | -33.3 C (-27.9 F) |
| 1995 | -35.6 C (-32.1 F) |
| 1996 | -40.6 C (-41.1 F) |
| 1997 | -33.9 C (-29.0 F) |
| 1998 | -36.7 C (-34.1 F) |
| 1999 | -31.1 C (-24.0 F) |
| 2000 | -30.0 C (-22.0 F) |
| 2001 | -35.0 C (-31.0 F) |
| 2002 | -35.0 C (-31.0 F) |
| 2003 | -39.4 C (-38.9 F) |
| 2004 | -32.2 C (-26.0 F) |
| 2005 | -30.6 C (-23.1 F) |
| 2006 | -35.0 C (-31.0 F) |
| 2007 | -37.8 C (-36.0 F) |
| 2008 | -33.3 C (-27.9 F) |
| 2009 | -30.6 C (-23.1 F) |
| 2010 | -34.4 C (-29.9 F) |
| 2011 | -35.0 C (-31.0 F) |
| 2012 | -26.1 C (-15.0 F) |
| 2013 | -30.6 C (-23.1 F) |
| 2014 | -34.4 C (-29.9 F) |
| 2015 | -30.0 C (-22.0 F) |
| 2016 | -30.6 C (-23.1 F) |
| 2017 | -32.8 C (-27.0 F) |
| 2018 | -32.2 C (-26.0 F) |
| 2019 | -31.1 C (-24.0 F) |
| 2020 | -27.8 C (-18.0 F) |
| 2021 | -25.0 C (-13.0 F) |
| 2022 | -33.9 C (-29.0 F) |
| 2023 | -37.8 C (-36.0 F) |
| 2024 | -32.8 C (-27.0 F) |
| 2025 | -32.8 C (-27.0 F) |
| 2026 | -28.3 C (-18.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1904 | 20.1 mm (0.8 in) |
| 1905 | 20.6 mm (0.8 in) |
| 1906 | 30.5 mm (1.2 in) |
| 1907 | 30.5 mm (1.2 in) |
| 1908 | 54.1 mm (2.1 in) |
| 1909 | 20.3 mm (0.8 in) |
| 1910 | 25.1 mm (1.0 in) |
| 1911 | 22.9 mm (0.9 in) |
| 1912 | 25.4 mm (1.0 in) |
| 1913 | 33.0 mm (1.3 in) |
| 1914 | 41.4 mm (1.6 in) |
| 1915 | 22.9 mm (0.9 in) |
| 1916 | 27.9 mm (1.1 in) |
| 1917 | 19.6 mm (0.8 in) |
| 1918 | 13.7 mm (0.5 in) |
| 1919 | 39.6 mm (1.6 in) |
| 1920 | 27.4 mm (1.1 in) |
| 1921 | 28.4 mm (1.1 in) |
| 1922 | 26.7 mm (1.1 in) |
| 1923 | 38.1 mm (1.5 in) |
| 1924 | 21.6 mm (0.9 in) |
| 1925 | 25.9 mm (1.0 in) |
| 1926 | 31.0 mm (1.2 in) |
| 1927 | 28.4 mm (1.1 in) |
| 1928 | 30.5 mm (1.2 in) |
| 1929 | 27.9 mm (1.1 in) |
| 1930 | 23.4 mm (0.9 in) |
| 1931 | 17.5 mm (0.7 in) |
| 1932 | 13.2 mm (0.5 in) |
| 1933 | 16.5 mm (0.6 in) |
| 1934 | 20.8 mm (0.8 in) |
| 1935 | 18.3 mm (0.7 in) |
| 1936 | 31.2 mm (1.2 in) |
| 1937 | 35.1 mm (1.4 in) |
| 1938 | 21.8 mm (0.9 in) |
| 1939 | 17.3 mm (0.7 in) |
| 1940 | 13.7 mm (0.5 in) |
| 1941 | 44.5 mm (1.8 in) |
| 1942 | 17.5 mm (0.7 in) |
| 1943 | 43.2 mm (1.7 in) |
| 1944 | 32.3 mm (1.3 in) |
| 1945 | 20.3 mm (0.8 in) |
| 1946 | 24.9 mm (1.0 in) |
| 1947 | 25.7 mm (1.0 in) |
| 1948 | 22.6 mm (0.9 in) |
| 1949 | 26.4 mm (1.0 in) |
| 1950 | 21.3 mm (0.8 in) |
| 1951 | 28.4 mm (1.1 in) |
| 1952 | 33.5 mm (1.3 in) |
| 1953 | 14.5 mm (0.6 in) |
| 1954 | 20.3 mm (0.8 in) |
| 1955 | 36.1 mm (1.4 in) |
| 1956 | 23.1 mm (0.9 in) |
| 1957 | 11.7 mm (0.5 in) |
| 1958 | 20.3 mm (0.8 in) |
| 1959 | 19.3 mm (0.8 in) |
| 1960 | 23.1 mm (0.9 in) |
| 1961 | 35.6 mm (1.4 in) |
| 1962 | 30.5 mm (1.2 in) |
| 1963 | 20.8 mm (0.8 in) |
| 1964 | 31.5 mm (1.2 in) |
| 1965 | 25.1 mm (1.0 in) |
| 1966 | 39.9 mm (1.6 in) |
| 1967 | 21.3 mm (0.8 in) |
| 1968 | 29.2 mm (1.1 in) |
| 1969 | 34.3 mm (1.4 in) |
| 1970 | 21.1 mm (0.8 in) |
| 1971 | 30.5 mm (1.2 in) |
| 1972 | 21.6 mm (0.9 in) |
| 1973 | 13.5 mm (0.5 in) |
| 1974 | 21.8 mm (0.9 in) |
| 1975 | 36.8 mm (1.4 in) |
| 1976 | 18.8 mm (0.7 in) |
| 1977 | 19.3 mm (0.8 in) |
| 1978 | 20.3 mm (0.8 in) |
| 1979 | 16.5 mm (0.6 in) |
| 1980 | 27.4 mm (1.1 in) |
| 1981 | 27.9 mm (1.1 in) |
| 1982 | 24.4 mm (1.0 in) |
| 1983 | 38.1 mm (1.5 in) |
| 1984 | 21.8 mm (0.9 in) |
| 1985 | 24.9 mm (1.0 in) |
| 1986 | 29.2 mm (1.1 in) |
| 1987 | 19.8 mm (0.8 in) |
| 1988 | 38.1 mm (1.5 in) |
| 1989 | 17.0 mm (0.7 in) |
| 1990 | 19.1 mm (0.8 in) |
| 1991 | 24.4 mm (1.0 in) |
| 1992 | 26.7 mm (1.1 in) |
| 1993 | 19.1 mm (0.8 in) |
| 1994 | 24.1 mm (0.9 in) |
| 1995 | 23.6 mm (0.9 in) |
| 1996 | 22.4 mm (0.9 in) |
| 1997 | 28.2 mm (1.1 in) |
| 1998 | 26.7 mm (1.1 in) |
| 1999 | 25.4 mm (1.0 in) |
| 2000 | 25.7 mm (1.0 in) |
| 2001 | 25.4 mm (1.0 in) |
| 2002 | 30.0 mm (1.2 in) |
| 2003 | 16.5 mm (0.6 in) |
| 2004 | 17.5 mm (0.7 in) |
| 2005 | 32.0 mm (1.3 in) |
| 2006 | 17.8 mm (0.7 in) |
| 2007 | 20.3 mm (0.8 in) |
| 2008 | 35.6 mm (1.4 in) |
| 2009 | 28.4 mm (1.1 in) |
| 2010 | 21.1 mm (0.8 in) |
| 2011 | 31.8 mm (1.3 in) |
| 2012 | 22.9 mm (0.9 in) |
| 2013 | 17.8 mm (0.7 in) |
| 2014 | 26.9 mm (1.1 in) |
| 2015 | 35.1 mm (1.4 in) |
| 2016 | 23.1 mm (0.9 in) |
| 2017 | 30.5 mm (1.2 in) |
| 2018 | 35.6 mm (1.4 in) |
| 2019 | 22.9 mm (0.9 in) |
| 2020 | 24.9 mm (1.0 in) |
| 2021 | 18.3 mm (0.7 in) |
| 2022 | 37.6 mm (1.5 in) |
| 2023 | 24.1 mm (0.9 in) |
| 2024 | 19.8 mm (0.8 in) |
| 2025 | 24.1 mm (0.9 in) |
| 2026 | 18.3 mm (0.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1904 | 33.0 mm (1.3 in) |
| 1905 | 38.7 mm (1.5 in) |
| 1906 | 53.3 mm (2.1 in) |
| 1907 | 51.3 mm (2.0 in) |
| 1908 | 91.5 mm (3.6 in) |
| 1909 | 57.2 mm (2.3 in) |
| 1910 | 47.7 mm (1.9 in) |
| 1911 | 43.5 mm (1.7 in) |
| 1912 | 59.9 mm (2.4 in) |
| 1913 | 73.7 mm (2.9 in) |
| 1914 | 50.8 mm (2.0 in) |
| 1915 | 40.8 mm (1.6 in) |
| 1916 | 59.7 mm (2.4 in) |
| 1917 | 26.7 mm (1.1 in) |
| 1918 | 23.2 mm (0.9 in) |
| 1919 | 50.7 mm (2.0 in) |
| 1920 | 46.0 mm (1.8 in) |
| 1921 | 43.9 mm (1.7 in) |
| 1922 | 38.1 mm (1.5 in) |
| 1923 | 38.1 mm (1.5 in) |
| 1924 | 24.8 mm (1.0 in) |
| 1925 | 60.2 mm (2.4 in) |
| 1926 | 51.3 mm (2.0 in) |
| 1927 | 42.6 mm (1.7 in) |
| 1928 | 42.0 mm (1.7 in) |
| 1929 | 36.5 mm (1.4 in) |
| 1930 | 61.3 mm (2.4 in) |
| 1931 | 30.4 mm (1.2 in) |
| 1932 | 34.3 mm (1.4 in) |
| 1933 | 24.4 mm (1.0 in) |
| 1934 | 37.5 mm (1.5 in) |
| 1935 | 37.4 mm (1.5 in) |
| 1936 | 38.5 mm (1.5 in) |
| 1937 | 40.4 mm (1.6 in) |
| 1938 | 49.5 mm (1.9 in) |
| 1939 | 26.5 mm (1.0 in) |
| 1940 | 25.4 mm (1.0 in) |
| 1941 | 50.0 mm (2.0 in) |
| 1942 | 39.1 mm (1.5 in) |
| 1943 | 119.8 mm (4.7 in) |
| 1944 | 53.3 mm (2.1 in) |
| 1945 | 43.9 mm (1.7 in) |
| 1946 | 36.3 mm (1.4 in) |
| 1947 | 37.6 mm (1.5 in) |
| 1948 | 46.8 mm (1.8 in) |
| 1949 | 36.1 mm (1.4 in) |
| 1950 | 33.7 mm (1.3 in) |
| 1951 | 50.3 mm (2.0 in) |
| 1952 | 60.7 mm (2.4 in) |
| 1953 | 27.3 mm (1.1 in) |
| 1954 | 36.5 mm (1.4 in) |
| 1955 | 69.1 mm (2.7 in) |
| 1956 | 40.2 mm (1.6 in) |
| 1957 | 27.9 mm (1.1 in) |
| 1958 | 40.9 mm (1.6 in) |
| 1959 | 34.8 mm (1.4 in) |
| 1960 | 35.6 mm (1.4 in) |
| 1961 | 89.4 mm (3.5 in) |
| 1962 | 81.0 mm (3.2 in) |
| 1963 | 32.2 mm (1.3 in) |
| 1964 | 67.6 mm (2.7 in) |
| 1965 | 47.7 mm (1.9 in) |
| 1966 | 56.9 mm (2.2 in) |
| 1967 | 41.9 mm (1.6 in) |
| 1968 | 59.1 mm (2.3 in) |
| 1969 | 80.3 mm (3.2 in) |
| 1970 | 48.9 mm (1.9 in) |
| 1971 | 40.9 mm (1.6 in) |
| 1972 | 39.1 mm (1.5 in) |
| 1973 | 26.0 mm (1.0 in) |
| 1974 | 35.8 mm (1.4 in) |
| 1975 | 80.0 mm (3.1 in) |
| 1976 | 41.5 mm (1.6 in) |
| 1977 | 26.2 mm (1.0 in) |
| 1978 | 39.8 mm (1.6 in) |
| 1979 | 31.7 mm (1.2 in) |
| 1980 | 43.2 mm (1.7 in) |
| 1981 | 55.1 mm (2.2 in) |
| 1982 | 41.8 mm (1.6 in) |
| 1983 | 66.8 mm (2.6 in) |
| 1984 | 47.5 mm (1.9 in) |
| 1985 | 44.7 mm (1.8 in) |
| 1986 | 77.5 mm (3.1 in) |
| 1987 | 41.6 mm (1.6 in) |
| 1988 | 38.6 mm (1.5 in) |
| 1989 | 30.5 mm (1.2 in) |
| 1990 | 38.8 mm (1.5 in) |
| 1991 | 65.3 mm (2.6 in) |
| 1992 | 42.9 mm (1.7 in) |
| 1993 | 49.8 mm (2.0 in) |
| 1994 | 35.9 mm (1.4 in) |
| 1995 | 38.1 mm (1.5 in) |
| 1996 | 69.7 mm (2.7 in) |
| 1997 | 46.6 mm (1.8 in) |
| 1998 | 38.7 mm (1.5 in) |
| 1999 | 39.6 mm (1.6 in) |
| 2000 | 38.1 mm (1.5 in) |
| 2001 | 28.7 mm (1.1 in) |
| 2002 | 43.8 mm (1.7 in) |
| 2003 | 34.6 mm (1.4 in) |
| 2004 | 56.1 mm (2.2 in) |
| 2005 | 40.6 mm (1.6 in) |
| 2006 | 27.8 mm (1.1 in) |
| 2007 | 37.3 mm (1.5 in) |
| 2008 | 46.9 mm (1.8 in) |
| 2009 | 40.4 mm (1.6 in) |
| 2010 | 67.6 mm (2.7 in) |
| 2011 | 40.1 mm (1.6 in) |
| 2012 | 43.5 mm (1.7 in) |
| 2013 | 44.5 mm (1.8 in) |
| 2014 | 55.7 mm (2.2 in) |
| 2015 | 58.2 mm (2.3 in) |
| 2016 | 46.3 mm (1.8 in) |
| 2017 | 73.5 mm (2.9 in) |
| 2018 | 71.1 mm (2.8 in) |
| 2019 | 42.7 mm (1.7 in) |
| 2020 | 34.8 mm (1.4 in) |
| 2021 | 52.3 mm (2.1 in) |
| 2022 | 66.5 mm (2.6 in) |
| 2023 | 41.7 mm (1.6 in) |
| 2024 | 43.2 mm (1.7 in) |
| 2025 | 61.8 mm (2.4 in) |
| 2026 | 35.8 mm (1.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1904 | 43 days |
| 1905 | 18 days |
| 1906 | 17 days |
| 1907 | 25 days |
| 1908 | 15 days |
| 1909 | 12 days |
| 1910 | 20 days |
| 1911 | 21 days |
| 1912 | 26 days |
| 1913 | 27 days |
| 1914 | 42 days |
| 1915 | 19 days |
| 1916 | 22 days |
| 1917 | 19 days |
| 1918 | 20 days |
| 1919 | 16 days |
| 1920 | 21 days |
| 1921 | 36 days |
| 1922 | 36 days |
| 1923 | 34 days |
| 1924 | 28 days |
| 1925 | 15 days |
| 1926 | 23 days |
| 1927 | 20 days |
| 1928 | 26 days |
| 1929 | 19 days |
| 1930 | 27 days |
| 1931 | 22 days |
| 1932 | 21 days |
| 1933 | 38 days |
| 1934 | 16 days |
| 1935 | 26 days |
| 1936 | 33 days |
| 1937 | 32 days |
| 1938 | 24 days |
| 1939 | 54 days |
| 1940 | 36 days |
| 1941 | 16 days |
| 1942 | 26 days |
| 1943 | 23 days |
| 1944 | 17 days |
| 1945 | 20 days |
| 1946 | 20 days |
| 1947 | 21 days |
| 1948 | 24 days |
| 1949 | 13 days |
| 1950 | 13 days |
| 1951 | 19 days |
| 1952 | 48 days |
| 1953 | 23 days |
| 1954 | 18 days |
| 1955 | 19 days |
| 1956 | 33 days |
| 1957 | 35 days |
| 1958 | 23 days |
| 1959 | 21 days |
| 1960 | 22 days |
| 1961 | 17 days |
| 1962 | 21 days |
| 1963 | 19 days |
| 1964 | 18 days |
| 1965 | 22 days |
| 1966 | 22 days |
| 1967 | 15 days |
| 1968 | 16 days |
| 1969 | 29 days |
| 1970 | 14 days |
| 1971 | 22 days |
| 1972 | 22 days |
| 1973 | 15 days |
| 1974 | 27 days |
| 1975 | 20 days |
| 1976 | 30 days |
| 1977 | 37 days |
| 1978 | 29 days |
| 1979 | 27 days |
| 1980 | 23 days |
| 1981 | 19 days |
| 1982 | 14 days |
| 1983 | 11 days |
| 1984 | 16 days |
| 1985 | 16 days |
| 1986 | 40 days |
| 1987 | 40 days |
| 1988 | 31 days |
| 1989 | 19 days |
| 1990 | 17 days |
| 1991 | 22 days |
| 1992 | 22 days |
| 1993 | 20 days |
| 1994 | 19 days |
| 1995 | 13 days |
| 1996 | 18 days |
| 1997 | 11 days |
| 1998 | 23 days |
| 1999 | 29 days |
| 2000 | 34 days |
| 2001 | 22 days |
| 2002 | 22 days |
| 2003 | 25 days |
| 2004 | 20 days |
| 2005 | 15 days |
| 2006 | 13 days |
| 2007 | 13 days |
| 2008 | 21 days |
| 2009 | 15 days |
| 2010 | 26 days |
| 2011 | 14 days |
| 2012 | 26 days |
| 2013 | 16 days |
| 2014 | 14 days |
| 2015 | 19 days |
| 2016 | 21 days |
| 2017 | 20 days |
| 2018 | 24 days |
| 2019 | 15 days |
| 2020 | 21 days |
| 2021 | 29 days |
| 2022 | 19 days |
| 2023 | 16 days |
| 2024 | 10 days |
| 2025 | 34 days |
| 2026 | 11 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
64 years with a frostAcross 64 years with a frost, the median last spring frost at Lake Yellowstone falls on 28 June and the median first autumn frost on 6 July, which leaves a median of 10 days between them.
In 1969 to 2022 the median growing season was 11 days. That is 1 day more than in 1909 to 1961.
Fitted over all years, the growing season changes by +3.3 days per decade at this station.
| Measure | Median, all years | Earliest period (1909 to 1961) | Recent period (1969 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 28 June | 28 June | 28 June | no change | -0.3 days per decade |
| First autumn frost | 6 July | 5 July | 8 July | 3 days later | +3.0 days per decade |
| Growing days | 10 days | 10 days | 11 days | 1 day more | +3.3 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
77 years, 1904 to 2021A day with at least 24.2 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 48.3 mm (1.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 24.2 mm (1.0 in) | |
| 5 years | 30.8 mm (1.2 in) | |
| 10 years | 35.1 mm (1.4 in) | |
| 25 years | 40.5 mm (1.6 in) | |
| 50 years | 44.4 mm (1.7 in) | |
| 100 years | 48.3 mm (1.9 in) | Longer than the 77 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, 77 years of values from 1904 to 2021.
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: 54.1 mm (2.1 in) in 1908; 41.4 mm (1.6 in) in 1914; 39.9 mm (1.6 in) in 1966.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Lake Yellowstone, at 1972. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1972 ran 0.4 C (0.6 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1972 | -0.4 | -0.6 | possible | 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.
Climate Twins
1994 to 2022 against 1961 to 1990Over 1994 to 2022, Lake Yellowstone had a mean temperature of 1.1 C (33.9 F) and 564.5 mm (22.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Pitkin (United States, 737 km away), King Salmon (United States, 3,466 km away) and Crested Butte (United States, 693 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Pitkin | United States | 737 km (458 mi) | 0.7 C (33.3 F) | 486.9 mm (19.2 in) | 1.02 |
| King Salmon | United States | 3,466 km (2,154 mi) | 0.8 C (33.5 F) | 504.3 mm (19.9 in) | 1.07 |
| Crested Butte | United States | 693 km (431 mi) | 1.4 C (34.5 F) | 597.5 mm (23.5 in) | 1.17 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).