Every February in Alturas, CA from 1936 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.
| Year | Mean, °F | Rank | High, °F | Rank | Low, °F | Rank | Precipitation, in | Rank | Days missing |
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| 2026 | 38.2 | 11 | 51.4 | 11 | 25 | 16 | 2.05 | 17 | 0 |
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| 2025 | 32 | 54 | 43 | 69 | 20.9 | 44 | 4.59 | 2 | 0 |
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| 2024 | 35.5 | 24 | 46.3 | 39 | 24.8 | 19 | 2.15 | 14 | 0 |
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| 2023 | 30.8 | 63 | 43.1 | 67 | 18.6 | 64 | 1.08 | 42 | 0 |
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| 2022 | 33.2 | 45 | 51.4 | 11 | 14.9 | 75 | 0.39 | 79 | 0 |
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| 2021 | 32.9 | 49 | 44.8 | 53 | 21.1 | 41 | 1.41 | 28 | 0 |
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| 2020 | 33.9 | 38 | 50.4 | 16 | 17.5 | 65 | 0.14 | 89 | 0 |
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| 2019 | | | 36.9 | 85 | | | 2.70 | 6 | 3 |
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| 2018 | 31.2 | 62 | 45.9 | 42 | 16.4 | 71 | 0.39 | 79 | 0 |
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| 2017 | 36.1 | 21 | 45.3 | 49 | 27 | 9 | 3.23 | 3 | 0 |
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| 2016 | 39.1 | 6 | 53.2 | 6 | 24.9 | 17 | 0.50 | 73 | 0 |
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| 2015 | 41.7 | 2 | 56.3 | 3 | 27.2 | 8 | 1.02 | 47 | 0 |
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| 2014 | 36.9 | 16 | 49.1 | 21 | 24.6 | 20 | 1.48 | 27 | 0 |
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| 2013 | 32.5 | 52 | 45.5 | 47 | 19.4 | 58 | 0.25 | 83 | 0 |
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| 2012 | 32.6 | 50 | 45.9 | 42 | 19.4 | 58 | 0.93 | 50 | 1 |
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| 2011 | 29.7 | 72 | 42.4 | 73 | 16.9 | 68 | 0.73 | 63 | 0 |
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| 2010 | 36.5 | 18 | 49 | 22 | 24.1 | 22 | 0.27 | 82 | 0 |
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| 2009 | 35.1 | 26 | 46.1 | 40 | 24.1 | 22 | 0.76 | 61 | 0 |
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| 2008 | 28.9 | 75 | 41.8 | 75 | 15.9 | 72 | 0.57 | 69 | 0 |
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| 2007 | 34.8 | 30 | 46.6 | 37 | 23 | 28 | 1.57 | 26 | 0 |
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| 2006 | 33.9 | 38 | 48.1 | 26 | 19.8 | 53 | 1.09 | 41 | 0 |
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| 2005 | 35.5 | 24 | 48.9 | 24 | 22.1 | 36 | 0.76 | 61 | 0 |
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| 2004 | 34.4 | 34 | 43.6 | 63 | 25.2 | 14 | 1.72 | 22 | 0 |
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| 2003 | 32 | 54 | 44.7 | 54 | 19.3 | 61 | 1.04 | 46 | 0 |
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| 2002 | 36 | 22 | 49 | 22 | 22.9 | 30 | 1.70 | 23 | 0 |
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| 2001 | 30.7 | 64 | 42.6 | 71 | 18.7 | 63 | 0.58 | 67 | 0 |
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| 2000 | 37.5 | 15 | 46.9 | 35 | 28.1 | 5 | 1.26 | 34 | 0 |
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| 1999 | 31.6 | 57 | 41.4 | 79 | 21.9 | 38 | 2.06 | 16 | 0 |
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| 1998 | 33.9 | 38 | 42.5 | 72 | 25.3 | 13 | 1.08 | 42 | 2 |
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| 1997 | 34.3 | 35 | 47 | 33 | 21.6 | 39 | 0.46 | 76 | 0 |
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| 1996 | 36.6 | 17 | 50.2 | 17 | 22.7 | 33 | 3.10 | 4 | 2 |
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| 1995 | | | | | 22.6 | 34 | 0.53 | 71 | 4 |
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| 1994 | 30.5 | 65 | 44.2 | 59 | 17 | 67 | 1.28 | 32 | 1 |
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| 1993 | 28.4 | 77 | 40.5 | 80 | 16.5 | 69 | 0.91 | 52 | 1 |
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| 1992 | | | 51.5 | 9 | | | 0.33 | 81 | 3 |
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| 1991 | 39.7 | 4 | 56.9 | 2 | 22.8 | 32 | 0.41 | 78 | 2 |
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| 1990 | 28.1 | 78 | 42.8 | 70 | 13.1 | 82 | 1.08 | 42 | 1 |
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| 1989 | | | 38.3 | 82 | 6.6 | 85 | 0.77 | 60 | 3 |
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| 1988 | | | 51.5 | 9 | | | 0.25 | 83 | 4 |
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| 1987 | 34.9 | 27 | 47.3 | 31 | 22.3 | 35 | 0.68 | 64 | 2 |
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| 1986 | 38.3 | 10 | 47.8 | 28 | 28.8 | 4 | 5.08 | 1 | 0 |
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| 1985 | 29.2 | 74 | 43.7 | 62 | 13.8 | 79 | 0.87 | 55 | 2 |
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| 1984 | 33.5 | 42 | 47 | 33 | 19.8 | 53 | 1.11 | 39 | 1 |
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| 1983 | 37.8 | 13 | 47.8 | 28 | 27.7 | 6 | 1.96 | 18 | 1 |
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| 1982 | 30.4 | 67 | 44.3 | 57 | 16.5 | 69 | 1.13 | 38 | 0 |
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| 1981 | 33.1 | 46 | 47.2 | 32 | 19 | 62 | 1.05 | 45 | 1 |
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| 1980 | 38.4 | 9 | 49.5 | 20 | 27.3 | 7 | 1.82 | 21 | 1 |
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| 1979 | 31.3 | 61 | 41.5 | 77 | 21.1 | 41 | 1.37 | 31 | 0 |
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| 1978 | 34.9 | 27 | 46.8 | 36 | 23 | 28 | 0.88 | 53 | 0 |
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| 1977 | 31.4 | 60 | 50 | 18 | 13 | 83 | 0.48 | 74 | 1 |
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| 1976 | 33.4 | 44 | 45.8 | 46 | 20.9 | 44 | 1.38 | 30 | 0 |
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| 1975 | 29.6 | 73 | 39.3 | 81 | 19.8 | 53 | 2.47 | 8 | 0 |
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| 1974 | 30 | 70 | 44.3 | 57 | 15.7 | 73 | 0.86 | 56 | 0 |
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| 1973 | 34.2 | 37 | 45.5 | 47 | 22.9 | 30 | 0.56 | 70 | 0 |
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| 1972 | 33.1 | 46 | 45.9 | 42 | 20.3 | 51 | 2.48 | 7 | 0 |
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| 1971 | 34.3 | 35 | 47.7 | 30 | 20.8 | 46 | 0.20 | 86 | 0 |
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| 1970 | 37.8 | 13 | 51.1 | 15 | 24.5 | 21 | 0.59 | 66 | 0 |
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| 1969 | 30.5 | 65 | 41.5 | 77 | 19.5 | 57 | 0.93 | 50 | 1 |
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| 1968 | 39.1 | 6 | 52 | 7 | 26.3 | 10 | 1.39 | 29 | 0 |
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| 1967 | 36.3 | 20 | 51.9 | 8 | 20.8 | 46 | 0.15 | 88 | 0 |
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| 1966 | 30.4 | 67 | 43.5 | 64 | 17.3 | 66 | 0.61 | 65 | 0 |
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| 1965 | 35.8 | 23 | 51.3 | 14 | 20.4 | 50 | 0.16 | 87 | 0 |
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| 1964 | 29.9 | 71 | 46.1 | 40 | 13.8 | 79 | 0.21 | 85 | 0 |
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| 1963 | 44.7 | 1 | 57.7 | 1 | 31.8 | 1 | 1.69 | 24 | 0 |
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| 1962 | 31.9 | 56 | 43.5 | 64 | 20.3 | 51 | 1.27 | 33 | 0 |
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| 1961 | 38.7 | 8 | 51.4 | 11 | 26.1 | 12 | 1.67 | 25 | 0 |
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| 1960 | 32.6 | 50 | 44.5 | 56 | 21.1 | 41 | 2.24 | 12 | 2 |
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| 1959 | 31.6 | 57 | 44.1 | 60 | 19.4 | 58 | 1.24 | 36 | 1 |
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| 1958 | 40 | 3 | 50 | 18 | 30.3 | 2 | 2.39 | 9 | 1 |
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| 1957 | 34.7 | 32 | 48.9 | 24 | 20.6 | 49 | 0.99 | 48 | 0 |
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| 1956 | 25.8 | 80 | 38.3 | 82 | 13.2 | 81 | 1.19 | 37 | 0 |
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| 1955 | 28.6 | 76 | 43.1 | 67 | 14.1 | 76 | 0.85 | 57 | 0 |
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| 1954 | | | 55.3 | 4 | 23.3 | 27 | 1.11 | 39 | 3 |
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| 1953 | | | | | | | 0.95 | 49 | 7 |
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| 1952 | | | | | | | 2.25 | 11 | 3 |
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| 1951 | 33.5 | 42 | 45 | 51 | 22 | 37 | 1.25 | 35 | 0 |
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| 1950 | 34.8 | 30 | 48 | 27 | 21.6 | 39 | 0.48 | 74 | 0 |
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| 1949 | 23.4 | 82 | 36.8 | 86 | 10 | 84 | 0.85 | 57 | 0 |
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| 1948 | 30.4 | 67 | 44.9 | 52 | 15.7 | 73 | 0.51 | 72 | 1 |
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| 1947 | 39.2 | 5 | 53.5 | 5 | 24.9 | 17 | 0.88 | 53 | 0 |
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| 1946 | 31.5 | 59 | 43.3 | 66 | 19.6 | 56 | 0.58 | 67 | 0 |
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| 1945 | 34.6 | 33 | 45.3 | 49 | 23.9 | 24 | 2.26 | 10 | 0 |
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| 1944 | 34.9 | 27 | 44.7 | 54 | 25.2 | 14 | 0.80 | 59 | 0 |
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| 1943 | | | | | | | | | 5 |
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| 1942 | 33.1 | 46 | 42.4 | 73 | 23.8 | 25 | 1.84 | 20 | 0 |
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| 1941 | 36.4 | 19 | 46.5 | 38 | 26.3 | 10 | 2.13 | 15 | 0 |
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| 1940 | 38.1 | 12 | 45.9 | 42 | 30.2 | 3 | 3.08 | 5 | 0 |
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| 1939 | 25.2 | 81 | 36.4 | 87 | 14 | 78 | 0.45 | 77 | 0 |
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| 1938 | 32.1 | 53 | 41.8 | 75 | 20.7 | 48 | 2.24 | 12 | 2 |
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| 1937 | 26 | 79 | 37.7 | 84 | 14.1 | 76 | 1.85 | 19 | 2 |
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| 1936 | 33.8 | 41 | 44.1 | 60 | 23.6 | 26 | | | 1 |
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