Holter Dam Weather Records (USC00244241)
Record envelope, standing records and threshold days for Holter Dam (USC00244241), Montana, United States, with 124 years of record.
Key Facts for Holter Dam
- Holter Dam (USC00244241) is a weather station in Montana, United States at 46.99 latitude and -112.01 longitude, 1,063 m (3,487 ft) above sea level.
- The station reports from 1903 to 2026, 124 years of record.
- 1,464 records set at Holter Dam still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Holter Dam set a daily record high maximum temperature of 27.2 C (81.0 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: Montana, United States, 46.99 latitude, -112.01 longitude.
- Elevation: 1,063 m (3,487 ft).
- Period of record: 1903 to 2026, 124 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 | 18.3 C (64.9 F) | -42.2 C (-44.0 F) | 16.7 C (62.1 F) | -19.4 C (-2.9 F) |
| Feb | 20.6 C (69.1 F) | -40.6 C (-41.1 F) | 16.7 C (62.1 F) | -22.2 C (-8.0 F) |
| Mar | 24.4 C (75.9 F) | -36.1 C (-33.0 F) | 24.4 C (75.9 F) | -18.9 C (-2.0 F) |
| Apr | 31.7 C (89.1 F) | -22.8 C (-9.0 F) | 28.3 C (82.9 F) | -6.1 C (21.0 F) |
| May | 37.2 C (99.0 F) | -11.1 C (12.0 F) | 30.6 C (87.1 F) | -4.4 C (24.1 F) |
| Jun | 38.9 C (102.0 F) | -3.3 C (26.1 F) | 28.9 C (84.0 F) | 1.1 C (34.0 F) |
| Jul | 42.2 C (108.0 F) | 1.7 C (35.1 F) | 37.8 C (100.0 F) | 7.8 C (46.0 F) |
| Aug | 39.4 C (102.9 F) | -1.1 C (30.0 F) | 37.8 C (100.0 F) | 3.9 C (39.0 F) |
| Sep | 36.7 C (98.1 F) | -19.4 C (-2.9 F) | 30.0 C (86.0 F) | -2.8 C (27.0 F) |
| Oct | 30.6 C (87.1 F) | -21.1 C (-6.0 F) | 29.4 C (84.9 F) | 0.0 C (32.0 F) |
| Nov | 25.0 C (77.0 F) | -31.7 C (-25.1 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -41.1 C (-42.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1903 | 23 |
| 1904 | 15 |
| 1905 | 21 |
| 1906 | 18 |
| 1907 | 22 |
| 1908 | 25 |
| 1909 | 25 |
| 1910 | 24 |
| 1911 | 12 |
| 1912 | 9 |
| 1913 | 9 |
| 1914 | 10 |
| 1915 | 13 |
| 1916 | 20 |
| 1917 | 23 |
| 1918 | 34 |
| 1919 | 39 |
| 1920 | 12 |
| 1921 | 18 |
| 1922 | 14 |
| 1923 | 8 |
| 1924 | 21 |
| 1925 | 6 |
| 1926 | 13 |
| 1927 | 7 |
| 1928 | 6 |
| 1929 | 16 |
| 1930 | 16 |
| 1931 | 16 |
| 1932 | 16 |
| 1933 | 17 |
| 1934 | 16 |
| 1935 | 23 |
| 1936 | 48 |
| 1937 | 7 |
| 1938 | 2 |
| 1939 | 14 |
| 1940 | 12 |
| 1941 | 4 |
| 1942 | 3 |
| 1943 | 15 |
| 1944 | 3 |
| 1945 | 5 |
| 1946 | 6 |
| 1947 | 8 |
| 1948 | 1 |
| 1949 | 6 |
| 1950 | 15 |
| 1951 | 17 |
| 1952 | 7 |
| 1953 | 11 |
| 1954 | 10 |
| 1955 | 11 |
| 1956 | 6 |
| 1957 | 8 |
| 1958 | 5 |
| 1959 | 6 |
| 1960 | 23 |
| 1961 | 5 |
| 1962 | 9 |
| 1963 | 5 |
| 1964 | 3 |
| 1965 | 15 |
| 1966 | 7 |
| 1967 | 6 |
| 1968 | 12 |
| 1969 | 9 |
| 1970 | 4 |
| 1971 | 5 |
| 1972 | 16 |
| 1973 | 12 |
| 1974 | 9 |
| 1975 | 7 |
| 1976 | 2 |
| 1977 | 2 |
| 1978 | 3 |
| 1979 | 5 |
| 1980 | 9 |
| 1981 | 3 |
| 1982 | 7 |
| 1983 | 6 |
| 1984 | 5 |
| 1985 | 28 |
| 1986 | 8 |
| 1987 | 15 |
| 1988 | 5 |
| 1989 | 12 |
| 1990 | 13 |
| 1991 | 11 |
| 1992 | 16 |
| 1993 | 9 |
| 1994 | 5 |
| 1995 | 18 |
| 1996 | 15 |
| 1997 | 6 |
| 1998 | 7 |
| 1999 | 20 |
| 2000 | 11 |
| 2001 | 8 |
| 2002 | 21 |
| 2003 | 21 |
| 2004 | 13 |
| 2005 | 13 |
| 2006 | 12 |
| 2007 | 8 |
| 2008 | 9 |
| 2009 | 13 |
| 2010 | 11 |
| 2011 | 10 |
| 2012 | 8 |
| 2013 | 5 |
| 2014 | 12 |
| 2015 | 10 |
| 2017 | 5 |
| 2019 | 14 |
| 2020 | 12 |
| 2021 | 19 |
| 2022 | 23 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 11 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1936-07-30 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 2002-06-10 | Record daily precipitation | Record daily precipitation 74.2 mm (2.9 in) |
Wettest Day of Each Month
Jun: 74.2 mm (2.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 27.9 mm (1.1 in) | 3 January 1916 |
| Feb | 22.9 mm (0.9 in) | 25 February 1911 |
| Mar | 20.3 mm (0.8 in) | 6 March 1950 |
| Apr | 51.3 mm (2.0 in) | 23 April 1925 |
| May | 64.8 mm (2.6 in) | 8 May 2024 |
| Jun | 74.2 mm (2.9 in) | 10 June 2002 |
| Jul | 46.0 mm (1.8 in) | 10 July 1983 |
| Aug | 63.5 mm (2.5 in) | 23 August 2014 |
| Sep | 58.4 mm (2.3 in) | 3 September 1909 |
| Oct | 37.6 mm (1.5 in) | 5 October 2025 |
| Nov | 16.3 mm (0.6 in) | 15 November 1952 |
| Dec | 24.4 mm (1.0 in) | 6 December 1916 |
Period of Record Coverage
1903 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1903 | 305 | 84% | No |
| 1904 | 363 | 99% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 360 | 99% | Yes |
| 1907 | 331 | 91% | Yes |
| 1908 | 124 | 34% | No |
| 1909 | 357 | 98% | Yes |
| 1910 | 355 | 97% | Yes |
| 1911 | 331 | 91% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 361 | 99% | Yes |
| 1914 | 362 | 99% | Yes |
| 1915 | 362 | 99% | Yes |
| 1916 | 310 | 85% | No |
| 1917 | 359 | 98% | Yes |
| 1918 | 319 | 87% | No |
| 1919 | 358 | 98% | Yes |
| 1920 | 361 | 99% | Yes |
| 1921 | 356 | 98% | Yes |
| 1922 | 357 | 98% | Yes |
| 1923 | 357 | 98% | Yes |
| 1924 | 362 | 99% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 364 | 100% | Yes |
| 1930 | 362 | 99% | Yes |
| 1931 | 363 | 99% | Yes |
| 1932 | 364 | 99% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 361 | 99% | Yes |
| 1935 | 362 | 99% | Yes |
| 1936 | 363 | 99% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 360 | 99% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 362 | 99% | Yes |
| 1942 | 361 | 99% | Yes |
| 1943 | 362 | 99% | Yes |
| 1944 | 361 | 99% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 359 | 98% | Yes |
| 1947 | 360 | 99% | Yes |
| 1948 | 363 | 99% | Yes |
| 1949 | 360 | 99% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 363 | 99% | Yes |
| 1953 | 360 | 99% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 361 | 99% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 361 | 99% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 339 | 93% | Yes |
| 1963 | 357 | 98% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 362 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 334 | 92% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 363 | 99% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 354 | 97% | Yes |
| 2003 | 360 | 99% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 359 | 98% | Yes |
| 2007 | 361 | 99% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 361 | 99% | Yes |
| 2013 | 363 | 99% | Yes |
| 2014 | 348 | 95% | Yes |
| 2015 | 361 | 99% | Yes |
| 2016 | 362 | 99% | Yes |
| 2017 | 352 | 96% | Yes |
| 2018 | 347 | 95% | Yes |
| 2019 | 344 | 94% | Yes |
| 2020 | 343 | 94% | Yes |
| 2021 | 349 | 96% | Yes |
| 2022 | 355 | 97% | Yes |
| 2023 | 330 | 90% | Yes |
| 2024 | 349 | 95% | Yes |
| 2025 | 348 | 95% | Yes |
| 2026 | 269 | 74% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 9 October 2026 | Holter Dam, US | daily high max (Provisional) | 27.2 C (81.0 F) | 0.5 C (0.9 F) | 104 years | 40 of 100 (Notable) |
| 7 October 2026 | Holter Dam, US | daily high max (Tie, Provisional) | 27.2 C (81.0 F) | tie | 65 years | 7 of 100 (Routine) |
| 10 September 2026 | Holter Dam, US | daily high min (Tie, Provisional) | 15.0 C (59.0 F) | tie | 75 years | 8 of 100 (Routine) |
| 5 August 2026 | Holter Dam, US | daily low min (Tie) | 4.4 C (39.9 F) | tie | 123 years | 10 of 100 (Routine) |
| 29 June 2026 | Holter Dam, US | daily low max | 14.4 C (57.9 F) | 1.7 C (3.1 F) | 56 years | 30 of 100 (Routine) |
| 14 June 2026 | Holter Dam, US | daily low min | 1.1 C (34.0 F) | 0.6 C (1.1 F) | 56 years | 28 of 100 (Routine) |
| 7 May 2026 | Holter Dam, US | daily low min | -4.4 C (24.1 F) | 0.5 C (0.9 F) | 108 years | 41 of 100 (Notable) |
| 21 April 2026 | Holter Dam, US | daily high max (Tie) | 28.3 C (82.9 F) | tie | 84 years | 8 of 100 (Routine) |
| 21 March 2026 | Holter Dam, US | monthly high max (Tie) | 24.4 C (75.9 F) | tie | 21 years | 6 of 100 (Routine) |
| 20 March 2026 | Holter Dam, US | daily high min | 10.0 C (50.0 F) | 3.3 C (5.9 F) | 109 years | 44 of 100 (Notable) |
| 20 March 2026 | Holter Dam, US | monthly high max (Tie) | 24.4 C (75.9 F) | tie | 21 years | 6 of 100 (Routine) |
| 17 March 2026 | Holter Dam, US | daily high min | 8.3 C (46.9 F) | 0.5 C (0.9 F) | 111 years | 40 of 100 (Notable) |
| 14 March 2026 | Holter Dam, US | monthly snowfall | 30.5 cm (12.0 in) | 7.6 cm (3.0 in) | 84 years | 62 of 100 (Major) |
| 14 March 2026 | Holter Dam, US | daily rain | 14.5 mm (0.6 in) | 2.6 mm (0.10 in) | 84 years | 20 of 100 (Routine) |
| 8 March 2026 | Holter Dam, US | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 21 years | 16 of 100 (Routine) |
| 17 February 2026 | Holter Dam, US | daily high max (Tie) | 13.9 C (57.0 F) | tie | 102 years | 10 of 100 (Routine) |
| 8 February 2026 | Holter Dam, US | daily high min | 7.2 C (45.0 F) | 0.5 C (0.9 F) | 26 years | 17 of 100 (Routine) |
| 7 February 2026 | Holter Dam, US | daily high min (Tie) | 6.7 C (44.1 F) | tie | 24 years | 4 of 100 (Routine) |
| 5 February 2026 | Holter Dam, US | daily high min (Tie) | 7.2 C (45.0 F) | tie | 63 years | 7 of 100 (Routine) |
| 4 February 2026 | Holter Dam, US | daily high max | 16.7 C (62.1 F) | 1.1 C (2.0 F) | 63 years | 29 of 100 (Routine) |
Climate Trend
114 complete years, 1904 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1904 | 7.0 C | -1.55 C |
| 1905 | 6.2 C | -2.42 C |
| 1906 | 6.6 C | -1.94 C |
| 1909 | 6.6 C | -1.99 C |
| 1910 | 9.5 C | +0.92 C |
| 1912 | 7.9 C | -0.68 C |
| 1913 | 7.2 C | -1.39 C |
| 1914 | 8.6 C | +0.03 C |
| 1917 | 7.6 C | -0.98 C |
| 1919 | 7.7 C | -0.91 C |
| 1920 | 7.8 C | -0.78 C |
| 1921 | 8.7 C | +0.11 C |
| 1922 | 7.0 C | -1.60 C |
| 1923 | 8.0 C | -0.55 C |
| 1924 | 6.9 C | -1.65 C |
| 1925 | 9.0 C | +0.46 C |
| 1926 | 8.6 C | -0.01 C |
| 1927 | 6.8 C | -1.82 C |
| 1928 | 7.9 C | -0.68 C |
| 1929 | 6.6 C | -1.98 C |
| 1930 | 8.7 C | +0.11 C |
| 1931 | 10.2 C | +1.64 C |
| 1932 | 8.8 C | +0.21 C |
| 1933 | 9.7 C | +1.10 C |
| 1934 | 10.6 C | +2.05 C |
| 1935 | 8.7 C | +0.16 C |
| 1936 | 8.9 C | +0.32 C |
| 1937 | 8.0 C | -0.57 C |
| 1938 | 8.9 C | +0.36 C |
| 1939 | 10.1 C | +1.56 C |
| 1940 | 9.6 C | +0.99 C |
| 1941 | 9.5 C | +0.92 C |
| 1942 | 8.3 C | -0.32 C |
| 1943 | 8.2 C | -0.33 C |
| 1944 | 8.8 C | +0.27 C |
| 1945 | 8.9 C | +0.29 C |
| 1946 | 9.4 C | +0.82 C |
| 1947 | 8.9 C | +0.31 C |
| 1948 | 7.9 C | -0.71 C |
| 1949 | 7.9 C | -0.70 C |
| 1950 | 7.4 C | -1.22 C |
| 1951 | 6.3 C | -2.24 C |
| 1952 | 8.7 C | +0.11 C |
| 1953 | 10.1 C | +1.51 C |
| 1954 | 8.6 C | +0.04 C |
| 1955 | 7.1 C | -1.48 C |
| 1956 | 8.8 C | +0.20 C |
| 1957 | 8.0 C | -0.58 C |
| 1958 | 9.5 C | +0.94 C |
| 1959 | 8.3 C | -0.31 C |
| 1960 | 8.7 C | +0.17 C |
| 1961 | 9.8 C | +1.18 C |
| 1963 | 9.6 C | +1.00 C |
| 1964 | 8.2 C | -0.38 C |
| 1965 | 8.1 C | -0.50 C |
| 1966 | 8.9 C | +0.37 C |
| 1967 | 8.7 C | +0.16 C |
| 1968 | 8.7 C | +0.08 C |
| 1969 | 7.8 C | -0.74 C |
| 1970 | 8.4 C | -0.20 C |
| 1971 | 8.2 C | -0.36 C |
| 1972 | 8.1 C | -0.51 C |
| 1973 | 9.1 C | +0.57 C |
| 1974 | 9.4 C | +0.86 C |
| 1975 | 7.1 C | -1.44 C |
| 1976 | 9.2 C | +0.61 C |
| 1977 | 8.6 C | +0.07 C |
| 1978 | 7.5 C | -1.06 C |
| 1979 | 8.3 C | -0.28 C |
| 1980 | 8.6 C | +0.03 C |
| 1981 | 9.8 C | +1.21 C |
| 1982 | 7.5 C | -1.06 C |
| 1983 | 9.1 C | +0.53 C |
| 1984 | 8.8 C | +0.27 C |
| 1985 | 7.5 C | -1.08 C |
| 1986 | 9.8 C | +1.20 C |
| 1987 | 10.6 C | +2.04 C |
| 1988 | 10.4 C | +1.78 C |
| 1990 | 9.4 C | +0.87 C |
| 1991 | 9.6 C | +1.06 C |
| 1992 | 9.9 C | +1.36 C |
| 1993 | 7.8 C | -0.79 C |
| 1994 | 9.9 C | +1.34 C |
| 1995 | 8.5 C | -0.10 C |
| 1996 | 6.8 C | -1.77 C |
| 1997 | 8.8 C | +0.20 C |
| 1998 | 9.4 C | +0.80 C |
| 1999 | 9.8 C | +1.22 C |
| 2000 | 9.0 C | +0.41 C |
| 2001 | 9.3 C | +0.74 C |
| 2002 | 8.3 C | -0.27 C |
| 2003 | 10.0 C | +1.38 C |
| 2004 | 9.5 C | +0.96 C |
| 2005 | 9.0 C | +0.40 C |
| 2006 | 9.8 C | +1.23 C |
| 2007 | 9.8 C | +1.24 C |
| 2008 | 8.3 C | -0.24 C |
| 2009 | 8.1 C | -0.50 C |
| 2010 | 8.5 C | -0.07 C |
| 2011 | 8.6 C | +0.01 C |
| 2012 | 9.7 C | +1.17 C |
| 2013 | 8.5 C | -0.03 C |
| 2014 | 8.2 C | -0.33 C |
| 2015 | 9.4 C | +0.79 C |
| 2016 | 9.3 C | +0.69 C |
| 2017 | 8.3 C | -0.29 C |
| 2018 | 7.6 C | -0.96 C |
| 2019 | 6.5 C | -2.11 C |
| 2020 | 8.8 C | +0.26 C |
| 2021 | 8.8 C | +0.27 C |
| 2022 | 7.9 C | -0.64 C |
| 2023 | 8.9 C | +0.32 C |
| 2024 | 9.2 C | +0.58 C |
| 2025 | 9.2 C | +0.66 C |
The annual mean temperature here has risen by 0.09 C (0.04 to 0.14) per decade over 1904 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 114 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 (0.04 to 0.14) per decade | 0.2 F (0.1 to 0.2) per decade | 1904 to 2025 | 114 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1904 to 2025 | 114 | Rise |
| Mean daily minimum | 0.05 C (-0.01 to 0.11) per decade | 0.09 F (-0.02 to 0.21) per decade | 1904 to 2025 | 114 | 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
1903 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1936 | 36.1 C (97.0 F) | 124 |
| Coldest night (TNn) | -42.2 C (-44.0 F) | 1909 | -30.0 C (-22.0 F) | 124 |
| Wettest day (Rx1day) | 74.2 mm (2.9 in) | 2002 | 30.5 mm (1.2 in) | 124 |
| Wettest five days (Rx5day) | 127.3 mm (5.0 in) | 2002 | 52.5 mm (2.1 in) | 124 |
| Longest dry spell (CDD) | 79 days | 1973 | 33 days | 124 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1903 | 33.9 C (93.0 F) |
| 1904 | 35.0 C (95.0 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 31.7 C (89.1 F) |
| 1908 | 38.3 C (100.9 F) |
| 1909 | 36.7 C (98.1 F) |
| 1910 | 38.9 C (102.0 F) |
| 1911 | 35.6 C (96.1 F) |
| 1912 | 35.6 C (96.1 F) |
| 1913 | 35.0 C (95.0 F) |
| 1914 | 37.2 C (99.0 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 35.0 C (95.0 F) |
| 1917 | 37.2 C (99.0 F) |
| 1918 | 36.1 C (97.0 F) |
| 1919 | 38.3 C (100.9 F) |
| 1920 | 35.6 C (96.1 F) |
| 1921 | 37.2 C (99.0 F) |
| 1922 | 35.0 C (95.0 F) |
| 1923 | 35.0 C (95.0 F) |
| 1924 | 37.2 C (99.0 F) |
| 1925 | 37.8 C (100.0 F) |
| 1926 | 36.7 C (98.1 F) |
| 1927 | 33.9 C (93.0 F) |
| 1928 | 37.2 C (99.0 F) |
| 1929 | 40.6 C (105.1 F) |
| 1930 | 37.8 C (100.0 F) |
| 1931 | 40.0 C (104.0 F) |
| 1932 | 36.7 C (98.1 F) |
| 1933 | 41.1 C (106.0 F) |
| 1934 | 39.4 C (102.9 F) |
| 1935 | 39.4 C (102.9 F) |
| 1936 | 42.2 C (108.0 F) |
| 1937 | 39.4 C (102.9 F) |
| 1938 | 36.1 C (97.0 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 39.4 C (102.9 F) |
| 1941 | 37.2 C (99.0 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 34.4 C (93.9 F) |
| 1945 | 35.6 C (96.1 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 35.0 C (95.0 F) |
| 1948 | 33.9 C (93.0 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 33.9 C (93.0 F) |
| 1951 | 36.1 C (97.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 35.6 C (96.1 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 35.6 C (96.1 F) |
| 1957 | 34.4 C (93.9 F) |
| 1958 | 36.1 C (97.0 F) |
| 1959 | 36.1 C (97.0 F) |
| 1960 | 39.4 C (102.9 F) |
| 1961 | 37.8 C (100.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 34.4 C (93.9 F) |
| 1965 | 33.9 C (93.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 35.0 C (95.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 33.9 C (93.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 36.7 C (98.1 F) |
| 1984 | 36.1 C (97.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 38.3 C (100.9 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 35.6 C (96.1 F) |
| 1993 | 32.8 C (91.0 F) |
| 1994 | 37.2 C (99.0 F) |
| 1995 | 35.6 C (96.1 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 33.9 C (93.0 F) |
| 1998 | 37.2 C (99.0 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 40.6 C (105.1 F) |
| 2003 | 39.4 C (102.9 F) |
| 2004 | 37.8 C (100.0 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 39.4 C (102.9 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 37.2 C (99.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 35.0 C (95.0 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 37.2 C (99.0 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 36.7 C (98.1 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 35.6 C (96.1 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 38.3 C (100.9 F) |
| 2024 | 37.8 C (100.0 F) |
| 2025 | 36.1 C (97.0 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1903 | -31.7 C (-25.1 F) |
| 1904 | -27.2 C (-17.0 F) |
| 1905 | -40.0 C (-40.0 F) |
| 1906 | -35.0 C (-31.0 F) |
| 1907 | -33.9 C (-29.0 F) |
| 1908 | -23.3 C (-9.9 F) |
| 1909 | -42.2 C (-44.0 F) |
| 1910 | -36.1 C (-33.0 F) |
| 1911 | -32.2 C (-26.0 F) |
| 1912 | -30.0 C (-22.0 F) |
| 1913 | -30.0 C (-22.0 F) |
| 1914 | -31.1 C (-24.0 F) |
| 1915 | -24.4 C (-11.9 F) |
| 1916 | -39.4 C (-38.9 F) |
| 1917 | -36.7 C (-34.1 F) |
| 1918 | -31.7 C (-25.1 F) |
| 1919 | -38.9 C (-38.0 F) |
| 1920 | -28.3 C (-18.9 F) |
| 1921 | -28.3 C (-18.9 F) |
| 1922 | -32.8 C (-27.0 F) |
| 1923 | -38.9 C (-38.0 F) |
| 1924 | -33.9 C (-29.0 F) |
| 1925 | -22.8 C (-9.0 F) |
| 1926 | -32.2 C (-26.0 F) |
| 1927 | -30.6 C (-23.1 F) |
| 1928 | -28.3 C (-18.9 F) |
| 1929 | -37.2 C (-35.0 F) |
| 1930 | -34.4 C (-29.9 F) |
| 1931 | -18.9 C (-2.0 F) |
| 1932 | -31.1 C (-24.0 F) |
| 1933 | -32.2 C (-26.0 F) |
| 1934 | -26.1 C (-15.0 F) |
| 1935 | -32.2 C (-26.0 F) |
| 1936 | -40.6 C (-41.1 F) |
| 1937 | -32.8 C (-27.0 F) |
| 1938 | -28.9 C (-20.0 F) |
| 1939 | -34.4 C (-29.9 F) |
| 1940 | -27.2 C (-17.0 F) |
| 1941 | -26.7 C (-16.1 F) |
| 1942 | -33.9 C (-29.0 F) |
| 1943 | -35.0 C (-31.0 F) |
| 1944 | -24.4 C (-11.9 F) |
| 1945 | -26.7 C (-16.1 F) |
| 1946 | -24.4 C (-11.9 F) |
| 1947 | -27.2 C (-17.0 F) |
| 1948 | -27.8 C (-18.0 F) |
| 1949 | -32.2 C (-26.0 F) |
| 1950 | -32.2 C (-26.0 F) |
| 1951 | -33.9 C (-29.0 F) |
| 1952 | -30.0 C (-22.0 F) |
| 1953 | -17.8 C (0.0 F) |
| 1954 | -34.4 C (-29.9 F) |
| 1955 | -30.6 C (-23.1 F) |
| 1956 | -28.3 C (-18.9 F) |
| 1957 | -35.6 C (-32.1 F) |
| 1958 | -21.1 C (-6.0 F) |
| 1959 | -32.2 C (-26.0 F) |
| 1960 | -26.7 C (-16.1 F) |
| 1961 | -24.4 C (-11.9 F) |
| 1962 | -31.7 C (-25.1 F) |
| 1963 | -31.1 C (-24.0 F) |
| 1964 | -32.2 C (-26.0 F) |
| 1965 | -26.1 C (-15.0 F) |
| 1966 | -23.9 C (-11.0 F) |
| 1967 | -26.7 C (-16.1 F) |
| 1968 | -35.0 C (-31.0 F) |
| 1969 | -30.0 C (-22.0 F) |
| 1970 | -23.9 C (-11.0 F) |
| 1971 | -30.0 C (-22.0 F) |
| 1972 | -33.3 C (-27.9 F) |
| 1973 | -25.0 C (-13.0 F) |
| 1974 | -31.7 C (-25.1 F) |
| 1975 | -27.8 C (-18.0 F) |
| 1976 | -26.1 C (-15.0 F) |
| 1977 | -27.8 C (-18.0 F) |
| 1978 | -28.9 C (-20.0 F) |
| 1979 | -25.6 C (-14.1 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -28.9 C (-20.0 F) |
| 1983 | -36.7 C (-34.1 F) |
| 1984 | -26.1 C (-15.0 F) |
| 1985 | -29.4 C (-20.9 F) |
| 1986 | -26.1 C (-15.0 F) |
| 1987 | -23.3 C (-9.9 F) |
| 1988 | -22.8 C (-9.0 F) |
| 1989 | -35.0 C (-31.0 F) |
| 1990 | -32.8 C (-27.0 F) |
| 1991 | -24.4 C (-11.9 F) |
| 1992 | -27.8 C (-18.0 F) |
| 1993 | -26.7 C (-16.1 F) |
| 1994 | -30.0 C (-22.0 F) |
| 1995 | -27.8 C (-18.0 F) |
| 1996 | -37.8 C (-36.0 F) |
| 1997 | -34.4 C (-29.9 F) |
| 1998 | -30.6 C (-23.1 F) |
| 1999 | -21.7 C (-7.1 F) |
| 2000 | -28.3 C (-18.9 F) |
| 2001 | -22.2 C (-8.0 F) |
| 2002 | -29.4 C (-20.9 F) |
| 2003 | -22.8 C (-9.0 F) |
| 2004 | -35.0 C (-31.0 F) |
| 2005 | -33.9 C (-29.0 F) |
| 2006 | -31.1 C (-24.0 F) |
| 2007 | -22.2 C (-8.0 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -39.4 C (-38.9 F) |
| 2010 | -23.3 C (-9.9 F) |
| 2011 | -31.1 C (-24.0 F) |
| 2012 | -26.1 C (-15.0 F) |
| 2013 | -33.3 C (-27.9 F) |
| 2014 | -35.0 C (-31.0 F) |
| 2015 | -24.4 C (-11.9 F) |
| 2016 | -30.6 C (-23.1 F) |
| 2017 | -31.7 C (-25.1 F) |
| 2018 | -30.0 C (-22.0 F) |
| 2019 | -36.1 C (-33.0 F) |
| 2020 | -25.6 C (-14.1 F) |
| 2021 | -34.4 C (-29.9 F) |
| 2022 | -41.1 C (-42.0 F) |
| 2023 | -28.3 C (-18.9 F) |
| 2024 | -38.9 C (-38.0 F) |
| 2025 | -31.1 C (-24.0 F) |
| 2026 | -22.2 C (-8.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1903 | 21.6 mm (0.9 in) |
| 1904 | 16.8 mm (0.7 in) |
| 1905 | 27.7 mm (1.1 in) |
| 1906 | 23.6 mm (0.9 in) |
| 1907 | 50.8 mm (2.0 in) |
| 1908 | 25.4 mm (1.0 in) |
| 1909 | 58.4 mm (2.3 in) |
| 1910 | 23.1 mm (0.9 in) |
| 1911 | 23.1 mm (0.9 in) |
| 1912 | 43.9 mm (1.7 in) |
| 1913 | 41.1 mm (1.6 in) |
| 1914 | 45.2 mm (1.8 in) |
| 1915 | 73.9 mm (2.9 in) |
| 1916 | 40.6 mm (1.6 in) |
| 1917 | 39.9 mm (1.6 in) |
| 1918 | 25.4 mm (1.0 in) |
| 1919 | 17.8 mm (0.7 in) |
| 1920 | 27.4 mm (1.1 in) |
| 1921 | 22.1 mm (0.9 in) |
| 1922 | 32.0 mm (1.3 in) |
| 1923 | 40.1 mm (1.6 in) |
| 1924 | 24.6 mm (1.0 in) |
| 1925 | 51.3 mm (2.0 in) |
| 1926 | 45.7 mm (1.8 in) |
| 1927 | 51.8 mm (2.0 in) |
| 1928 | 39.6 mm (1.6 in) |
| 1929 | 19.8 mm (0.8 in) |
| 1930 | 30.7 mm (1.2 in) |
| 1931 | 32.3 mm (1.3 in) |
| 1932 | 18.3 mm (0.7 in) |
| 1933 | 52.8 mm (2.1 in) |
| 1934 | 21.6 mm (0.9 in) |
| 1935 | 13.5 mm (0.5 in) |
| 1936 | 28.4 mm (1.1 in) |
| 1937 | 22.9 mm (0.9 in) |
| 1938 | 48.3 mm (1.9 in) |
| 1939 | 18.0 mm (0.7 in) |
| 1940 | 34.0 mm (1.3 in) |
| 1941 | 26.7 mm (1.1 in) |
| 1942 | 33.0 mm (1.3 in) |
| 1943 | 38.4 mm (1.5 in) |
| 1944 | 23.6 mm (0.9 in) |
| 1945 | 22.9 mm (0.9 in) |
| 1946 | 25.4 mm (1.0 in) |
| 1947 | 37.1 mm (1.5 in) |
| 1948 | 39.1 mm (1.5 in) |
| 1949 | 28.4 mm (1.1 in) |
| 1950 | 35.8 mm (1.4 in) |
| 1951 | 49.5 mm (1.9 in) |
| 1952 | 20.3 mm (0.8 in) |
| 1953 | 58.4 mm (2.3 in) |
| 1954 | 54.9 mm (2.2 in) |
| 1955 | 23.4 mm (0.9 in) |
| 1956 | 25.4 mm (1.0 in) |
| 1957 | 39.6 mm (1.6 in) |
| 1958 | 30.0 mm (1.2 in) |
| 1959 | 13.7 mm (0.5 in) |
| 1960 | 14.2 mm (0.6 in) |
| 1961 | 14.2 mm (0.6 in) |
| 1962 | 20.8 mm (0.8 in) |
| 1963 | 18.5 mm (0.7 in) |
| 1964 | 33.0 mm (1.3 in) |
| 1965 | 40.9 mm (1.6 in) |
| 1966 | 20.8 mm (0.8 in) |
| 1967 | 27.4 mm (1.1 in) |
| 1968 | 42.2 mm (1.7 in) |
| 1969 | 39.9 mm (1.6 in) |
| 1970 | 27.4 mm (1.1 in) |
| 1971 | 24.1 mm (0.9 in) |
| 1972 | 23.6 mm (0.9 in) |
| 1973 | 24.4 mm (1.0 in) |
| 1974 | 30.5 mm (1.2 in) |
| 1975 | 51.3 mm (2.0 in) |
| 1976 | 25.4 mm (1.0 in) |
| 1977 | 22.4 mm (0.9 in) |
| 1978 | 23.9 mm (0.9 in) |
| 1979 | 19.3 mm (0.8 in) |
| 1980 | 40.9 mm (1.6 in) |
| 1981 | 38.9 mm (1.5 in) |
| 1982 | 43.9 mm (1.7 in) |
| 1983 | 46.0 mm (1.8 in) |
| 1984 | 31.2 mm (1.2 in) |
| 1985 | 29.0 mm (1.1 in) |
| 1986 | 19.3 mm (0.8 in) |
| 1987 | 31.2 mm (1.2 in) |
| 1988 | 36.8 mm (1.4 in) |
| 1989 | 26.7 mm (1.1 in) |
| 1990 | 26.2 mm (1.0 in) |
| 1991 | 31.8 mm (1.3 in) |
| 1992 | 22.4 mm (0.9 in) |
| 1993 | 23.1 mm (0.9 in) |
| 1994 | 21.3 mm (0.8 in) |
| 1995 | 32.0 mm (1.3 in) |
| 1996 | 21.8 mm (0.9 in) |
| 1997 | 35.3 mm (1.4 in) |
| 1998 | 27.7 mm (1.1 in) |
| 1999 | 25.9 mm (1.0 in) |
| 2000 | 40.4 mm (1.6 in) |
| 2001 | 32.3 mm (1.3 in) |
| 2002 | 74.2 mm (2.9 in) |
| 2003 | 18.0 mm (0.7 in) |
| 2004 | 33.0 mm (1.3 in) |
| 2005 | 26.2 mm (1.0 in) |
| 2006 | 55.1 mm (2.2 in) |
| 2007 | 41.7 mm (1.6 in) |
| 2008 | 30.5 mm (1.2 in) |
| 2009 | 21.6 mm (0.9 in) |
| 2010 | 27.9 mm (1.1 in) |
| 2011 | 51.6 mm (2.0 in) |
| 2012 | 17.3 mm (0.7 in) |
| 2013 | 47.0 mm (1.9 in) |
| 2014 | 63.5 mm (2.5 in) |
| 2015 | 36.8 mm (1.4 in) |
| 2016 | 23.9 mm (0.9 in) |
| 2017 | 30.5 mm (1.2 in) |
| 2018 | 35.1 mm (1.4 in) |
| 2019 | 63.5 mm (2.5 in) |
| 2020 | 59.4 mm (2.3 in) |
| 2021 | 36.1 mm (1.4 in) |
| 2022 | 31.8 mm (1.3 in) |
| 2023 | 22.9 mm (0.9 in) |
| 2024 | 64.8 mm (2.6 in) |
| 2025 | 37.6 mm (1.5 in) |
| 2026 | 33.3 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1903 | 44.0 mm (1.7 in) |
| 1904 | 35.1 mm (1.4 in) |
| 1905 | 70.2 mm (2.8 in) |
| 1906 | 47.7 mm (1.9 in) |
| 1907 | 85.0 mm (3.3 in) |
| 1908 | 25.4 mm (1.0 in) |
| 1909 | 66.3 mm (2.6 in) |
| 1910 | 38.3 mm (1.5 in) |
| 1911 | 53.6 mm (2.1 in) |
| 1912 | 73.4 mm (2.9 in) |
| 1913 | 59.7 mm (2.4 in) |
| 1914 | 92.0 mm (3.6 in) |
| 1915 | 107.9 mm (4.2 in) |
| 1916 | 74.1 mm (2.9 in) |
| 1917 | 49.2 mm (1.9 in) |
| 1918 | 43.0 mm (1.7 in) |
| 1919 | 24.4 mm (1.0 in) |
| 1920 | 32.4 mm (1.3 in) |
| 1921 | 31.5 mm (1.2 in) |
| 1922 | 50.6 mm (2.0 in) |
| 1923 | 57.4 mm (2.3 in) |
| 1924 | 37.3 mm (1.5 in) |
| 1925 | 66.1 mm (2.6 in) |
| 1926 | 66.0 mm (2.6 in) |
| 1927 | 125.0 mm (4.9 in) |
| 1928 | 67.0 mm (2.6 in) |
| 1929 | 28.5 mm (1.1 in) |
| 1930 | 30.7 mm (1.2 in) |
| 1931 | 35.6 mm (1.4 in) |
| 1932 | 61.6 mm (2.4 in) |
| 1933 | 80.2 mm (3.2 in) |
| 1934 | 53.1 mm (2.1 in) |
| 1935 | 14.3 mm (0.6 in) |
| 1936 | 28.4 mm (1.1 in) |
| 1937 | 27.0 mm (1.1 in) |
| 1938 | 85.7 mm (3.4 in) |
| 1939 | 33.5 mm (1.3 in) |
| 1940 | 41.6 mm (1.6 in) |
| 1941 | 57.7 mm (2.3 in) |
| 1942 | 54.8 mm (2.2 in) |
| 1943 | 79.3 mm (3.1 in) |
| 1944 | 55.6 mm (2.2 in) |
| 1945 | 39.4 mm (1.6 in) |
| 1946 | 47.5 mm (1.9 in) |
| 1947 | 60.8 mm (2.4 in) |
| 1948 | 77.5 mm (3.1 in) |
| 1949 | 54.4 mm (2.1 in) |
| 1950 | 40.9 mm (1.6 in) |
| 1951 | 59.0 mm (2.3 in) |
| 1952 | 43.5 mm (1.7 in) |
| 1953 | 99.6 mm (3.9 in) |
| 1954 | 82.6 mm (3.3 in) |
| 1955 | 52.8 mm (2.1 in) |
| 1956 | 38.3 mm (1.5 in) |
| 1957 | 65.7 mm (2.6 in) |
| 1958 | 56.2 mm (2.2 in) |
| 1959 | 21.3 mm (0.8 in) |
| 1960 | 29.4 mm (1.2 in) |
| 1961 | 17.0 mm (0.7 in) |
| 1962 | 32.0 mm (1.3 in) |
| 1963 | 30.4 mm (1.2 in) |
| 1964 | 66.8 mm (2.6 in) |
| 1965 | 49.8 mm (2.0 in) |
| 1966 | 33.3 mm (1.3 in) |
| 1967 | 52.4 mm (2.1 in) |
| 1968 | 69.7 mm (2.7 in) |
| 1969 | 77.7 mm (3.1 in) |
| 1970 | 42.4 mm (1.7 in) |
| 1971 | 36.3 mm (1.4 in) |
| 1972 | 27.4 mm (1.1 in) |
| 1973 | 27.9 mm (1.1 in) |
| 1974 | 41.1 mm (1.6 in) |
| 1975 | 65.3 mm (2.6 in) |
| 1976 | 37.4 mm (1.5 in) |
| 1977 | 32.8 mm (1.3 in) |
| 1978 | 62.7 mm (2.5 in) |
| 1979 | 25.9 mm (1.0 in) |
| 1980 | 90.2 mm (3.6 in) |
| 1981 | 83.6 mm (3.3 in) |
| 1982 | 60.9 mm (2.4 in) |
| 1983 | 67.0 mm (2.6 in) |
| 1984 | 33.2 mm (1.3 in) |
| 1985 | 39.1 mm (1.5 in) |
| 1986 | 33.5 mm (1.3 in) |
| 1987 | 54.9 mm (2.2 in) |
| 1988 | 36.8 mm (1.4 in) |
| 1989 | 55.4 mm (2.2 in) |
| 1990 | 34.3 mm (1.4 in) |
| 1991 | 54.7 mm (2.2 in) |
| 1992 | 39.0 mm (1.5 in) |
| 1993 | 44.5 mm (1.8 in) |
| 1994 | 36.1 mm (1.4 in) |
| 1995 | 57.6 mm (2.3 in) |
| 1996 | 31.3 mm (1.2 in) |
| 1997 | 56.9 mm (2.2 in) |
| 1998 | 75.5 mm (3.0 in) |
| 1999 | 52.6 mm (2.1 in) |
| 2000 | 54.8 mm (2.2 in) |
| 2001 | 40.2 mm (1.6 in) |
| 2002 | 127.3 mm (5.0 in) |
| 2003 | 27.6 mm (1.1 in) |
| 2004 | 48.5 mm (1.9 in) |
| 2005 | 42.1 mm (1.7 in) |
| 2006 | 82.8 mm (3.3 in) |
| 2007 | 65.3 mm (2.6 in) |
| 2008 | 84.8 mm (3.3 in) |
| 2009 | 28.4 mm (1.1 in) |
| 2010 | 51.5 mm (2.0 in) |
| 2011 | 47.1 mm (1.9 in) |
| 2012 | 34.6 mm (1.4 in) |
| 2013 | 48.3 mm (1.9 in) |
| 2014 | 89.1 mm (3.5 in) |
| 2015 | 62.4 mm (2.5 in) |
| 2016 | 36.3 mm (1.4 in) |
| 2017 | 57.1 mm (2.2 in) |
| 2018 | 78.5 mm (3.1 in) |
| 2019 | 68.4 mm (2.7 in) |
| 2020 | 69.3 mm (2.7 in) |
| 2021 | 57.2 mm (2.3 in) |
| 2022 | 53.9 mm (2.1 in) |
| 2023 | 44.5 mm (1.8 in) |
| 2024 | 69.9 mm (2.8 in) |
| 2025 | 39.4 mm (1.6 in) |
| 2026 | 66.5 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1903 | 25 days |
| 1904 | 68 days |
| 1905 | 33 days |
| 1906 | 23 days |
| 1907 | 72 days |
| 1908 | 30 days |
| 1909 | 61 days |
| 1910 | 27 days |
| 1911 | 22 days |
| 1912 | 27 days |
| 1913 | 37 days |
| 1914 | 37 days |
| 1915 | 29 days |
| 1916 | 23 days |
| 1917 | 33 days |
| 1918 | 26 days |
| 1919 | 46 days |
| 1920 | 45 days |
| 1921 | 68 days |
| 1922 | 40 days |
| 1923 | 32 days |
| 1924 | 36 days |
| 1925 | 56 days |
| 1926 | 46 days |
| 1927 | 27 days |
| 1928 | 50 days |
| 1929 | 32 days |
| 1930 | 47 days |
| 1931 | 33 days |
| 1932 | 34 days |
| 1933 | 40 days |
| 1934 | 41 days |
| 1935 | 52 days |
| 1936 | 31 days |
| 1937 | 33 days |
| 1938 | 28 days |
| 1939 | 66 days |
| 1940 | 33 days |
| 1941 | 28 days |
| 1942 | 25 days |
| 1943 | 30 days |
| 1944 | 34 days |
| 1945 | 29 days |
| 1946 | 29 days |
| 1947 | 24 days |
| 1948 | 33 days |
| 1949 | 52 days |
| 1950 | 37 days |
| 1951 | 22 days |
| 1952 | 29 days |
| 1953 | 33 days |
| 1954 | 34 days |
| 1955 | 56 days |
| 1956 | 34 days |
| 1957 | 25 days |
| 1958 | 19 days |
| 1959 | 43 days |
| 1960 | 45 days |
| 1961 | 41 days |
| 1962 | 41 days |
| 1963 | 60 days |
| 1964 | 37 days |
| 1965 | 44 days |
| 1966 | 29 days |
| 1967 | 42 days |
| 1968 | 43 days |
| 1969 | 73 days |
| 1970 | 39 days |
| 1971 | 30 days |
| 1972 | 31 days |
| 1973 | 79 days |
| 1974 | 28 days |
| 1975 | 27 days |
| 1976 | 60 days |
| 1977 | 41 days |
| 1978 | 38 days |
| 1979 | 51 days |
| 1980 | 36 days |
| 1981 | 56 days |
| 1982 | 19 days |
| 1983 | 22 days |
| 1984 | 37 days |
| 1985 | 44 days |
| 1986 | 26 days |
| 1987 | 53 days |
| 1988 | 30 days |
| 1989 | 23 days |
| 1990 | 47 days |
| 1991 | 32 days |
| 1992 | 49 days |
| 1993 | 21 days |
| 1994 | 41 days |
| 1995 | 21 days |
| 1996 | 22 days |
| 1997 | 24 days |
| 1998 | 32 days |
| 1999 | 35 days |
| 2000 | 33 days |
| 2001 | 31 days |
| 2002 | 28 days |
| 2003 | 28 days |
| 2004 | 31 days |
| 2005 | 53 days |
| 2006 | 37 days |
| 2007 | 42 days |
| 2008 | 26 days |
| 2009 | 47 days |
| 2010 | 30 days |
| 2011 | 3 days |
| 2012 | 42 days |
| 2013 | 29 days |
| 2014 | 17 days |
| 2015 | 34 days |
| 2016 | 34 days |
| 2017 | 31 days |
| 2018 | 34 days |
| 2019 | 22 days |
| 2020 | 24 days |
| 2021 | 43 days |
| 2022 | 20 days |
| 2023 | 28 days |
| 2024 | 24 days |
| 2025 | 21 days |
| 2026 | 32 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
114 years with a frostAcross 114 years with a frost, the median last spring frost at Holter Dam falls on 13 May and the median first autumn frost on 25 September, which leaves a median of 136 days between them.
In 1996 to 2025 the median growing season was 125 days. That is 5 days fewer than in 1904 to 1939.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1904 to 1939) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 13 May | 14 May | 19 May | 5 days later | -0.2 days per decade |
| First autumn frost | 25 September | 20 September | 23 September | 3 days later | +0.6 days per decade |
| Growing days | 136 days | 130 days | 125 days | 5 days fewer | +0.8 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
115 years, 1904 to 2025A day with at least 30.9 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 78.7 mm (3.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.9 mm (1.2 in) | |
| 5 years | 42.7 mm (1.7 in) | |
| 10 years | 50.8 mm (2.0 in) | |
| 25 years | 61.7 mm (2.4 in) | |
| 50 years | 70.0 mm (2.8 in) | |
| 100 years | 78.7 mm (3.1 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 115 years of values from 1904 to 2025.
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: 74.2 mm (2.9 in) in 2002; 73.9 mm (2.9 in) in 1915; 64.8 mm (2.6 in) in 2024.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Holter Dam, at 1995. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1995 ran 0.2 C (0.4 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1995 | -0.2 | -0.4 | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Holter Dam had a mean temperature of 8.6 C (47.5 F) and 338.0 mm (13.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Phillips (United States, 844 km away), Castle Rock (United States, 1,024 km away) and Rush 1N (United States, 1,109 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Phillips | United States | 844 km (524 mi) | 8.7 C (47.6 F) | 385.7 mm (15.2 in) | 0.93 |
| Castle Rock | United States | 1,024 km (636 mi) | 8.7 C (47.6 F) | 444.6 mm (17.5 in) | 0.98 |
| Rush 1N | United States | 1,109 km (689 mi) | 8.5 C (47.3 F) | 349.4 mm (13.8 in) | 0.98 |
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).