Every July in Alturas, CA from 1935 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 | 68.7 | 20 | 90.5 | 22 | 46.9 | 23 | 0.10 | 44 | 0 |
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| 2025 | 69.2 | 18 | 89.4 | 33 | 49.1 | 6 | 0.41 | 19 | 0 |
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| 2024 | 72.3 | 2 | 94.5 | 1 | 50.1 | 2 | trace | 68 | 0 |
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| 2023 | 69.2 | 18 | 91.2 | 20 | 47.3 | 19 | trace | 68 | 0 |
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| 2022 | 69.5 | 14 | 92.7 | 8 | 46.2 | 31 | 0.00 | 81 | 0 |
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| 2021 | 72 | 3 | 94.5 | 1 | 49.5 | 4 | 0.07 | 50 | 0 |
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| 2020 | 67.6 | 36 | 90.5 | 22 | 44.6 | 48 | trace | 68 | 0 |
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| 2019 | 66.9 | 42 | 88 | 47 | 45.8 | 34 | 0.01 | 64 | 0 |
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| 2018 | 70.2 | 6 | 92.7 | 8 | 47.7 | 16 | 0.13 | 41 | 0 |
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| 2017 | 70.9 | 4 | 92.8 | 6 | 49 | 7 | 0.82 | 8 | 2 |
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| 2016 | 67 | 40 | 88.5 | 40 | 45.5 | 37 | 0.05 | 54 | 0 |
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| 2015 | 68.2 | 28 | 87.1 | 57 | 49.4 | 5 | 1.17 | 5 | 0 |
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| 2014 | 72.7 | 1 | 94 | 3 | 51.5 | 1 | 0.41 | 19 | 0 |
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| 2013 | 70.2 | 6 | 93.5 | 5 | 46.8 | 24 | trace | 68 | 0 |
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| 2012 | 67.4 | 38 | 89.4 | 33 | 45.4 | 39 | trace | 68 | 0 |
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| 2011 | 65.5 | 55 | 86.4 | 66 | 44.5 | 50 | trace | 68 | 0 |
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| 2010 | 67.6 | 36 | 90 | 29 | 45.3 | 42 | 0.02 | 60 | 0 |
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| 2009 | 68.1 | 30 | 90.5 | 22 | 45.8 | 34 | 0.01 | 64 | 0 |
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| 2008 | 67.8 | 35 | 89.4 | 33 | 46.3 | 30 | 0.02 | 60 | 0 |
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| 2007 | 69.4 | 17 | 92.1 | 17 | 46.6 | 26 | 0.04 | 56 | 0 |
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| 2006 | 70 | 9 | 92.3 | 15 | 47.7 | 16 | 0.03 | 58 | 0 |
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| 2005 | 69.6 | 13 | 91.5 | 19 | 47.6 | 18 | trace | 68 | 0 |
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| 2004 | 68.4 | 26 | 90.2 | 28 | 46.6 | 26 | trace | 68 | 1 |
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| 2003 | 70.3 | 5 | 92.6 | 10 | 48 | 11 | 0.26 | 28 | 0 |
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| 2002 | 70.2 | 6 | 92.6 | 10 | 47.8 | 15 | 0.01 | 64 | 0 |
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| 2001 | 65.9 | 50 | 87.1 | 57 | 44.7 | 47 | 0.14 | 39 | 0 |
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| 2000 | 64.2 | 72 | 85.6 | 73 | 42.8 | 68 | 0.55 | 16 | 0 |
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| 1999 | 64.3 | 71 | 86.2 | 68 | 42.5 | 72 | trace | 68 | 0 |
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| 1998 | 68.1 | 30 | 88.1 | 45 | 48 | 11 | 1.41 | 2 | 0 |
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| 1997 | 65.3 | 60 | 87.5 | 53 | 43.2 | 61 | 0.75 | 10 | 1 |
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| 1996 | 69.9 | 10 | 92.3 | 15 | 48 | 11 | 0.22 | 31 | 1 |
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| 1995 | 65.1 | 62 | 84.3 | 80 | 45.9 | 33 | 0.06 | 53 | 0 |
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| 1994 | 69.5 | 14 | 91.2 | 20 | 48.1 | 9 | 0.00 | 81 | 1 |
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| 1993 | 58.8 | 87 | 78.5 | 89 | 39 | 86 | 0.09 | 45 | 1 |
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| 1992 | 65 | 63 | 84.7 | 76 | 45.2 | 43 | 0.14 | 39 | 0 |
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| 1991 | 64.4 | 70 | 86.6 | 63 | 42.2 | 77 | 0.07 | 50 | 0 |
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| 1990 | 67.9 | 34 | 88.7 | 38 | 47 | 22 | 0.22 | 31 | 0 |
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| 1989 | 63.7 | 74 | 87.4 | 54 | 40.1 | 83 | 0.00 | 81 | 0 |
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| 1988 | 69.8 | 11 | 92.5 | 12 | 47.2 | 20 | trace | 68 | 0 |
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| 1987 | 62.6 | 82 | 82.7 | 86 | 42.1 | 78 | 1.27 | 3 | 1 |
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| 1986 | 63.4 | 77 | 83.9 | 81 | 42.8 | 68 | 0.61 | 14 | 1 |
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| 1985 | 68.6 | 22 | 90.4 | 26 | 46.8 | 24 | 0.05 | 54 | 0 |
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| 1984 | 68.3 | 27 | 90.4 | 26 | 46.2 | 31 | 0.02 | 60 | 0 |
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| 1983 | 60.3 | 86 | 81.3 | 88 | 39.3 | 85 | 0.00 | 81 | 0 |
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| 1982 | 62.9 | 80 | 83.4 | 85 | 42.3 | 75 | 0.26 | 28 | 1 |
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| 1981 | 65.4 | 57 | 87.8 | 50 | 43 | 64 | 0.02 | 60 | 0 |
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| 1980 | 65.2 | 61 | 86.8 | 59 | 43.6 | 55 | 0.40 | 21 | 0 |
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| 1979 | 64.9 | 64 | 86.7 | 62 | 43 | 64 | 0.13 | 41 | 0 |
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| 1978 | 64 | 73 | 84.8 | 74 | 43.1 | 63 | 0.09 | 45 | 0 |
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| 1977 | 64.8 | 66 | 86.6 | 63 | 42.9 | 67 | 0.21 | 34 | 0 |
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| 1976 | | | | | 43.5 | 58 | 0.46 | 17 | 4 |
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| 1975 | 65.4 | 57 | 86.5 | 65 | 44.4 | 52 | 0.19 | 36 | 0 |
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| 1974 | 63 | 79 | 84.5 | 78 | 41.6 | 80 | 0.73 | 11 | 0 |
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| 1973 | 66.9 | 42 | 89.4 | 33 | 44.5 | 50 | 0.01 | 64 | 0 |
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| 1972 | 66 | 49 | 89.5 | 31 | 42.5 | 72 | 0.04 | 56 | 0 |
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| 1971 | 66.1 | 48 | 87.3 | 55 | 44.9 | 45 | 0.42 | 18 | 0 |
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| 1970 | 66.3 | 46 | 87.3 | 55 | 45.2 | 43 | trace | 68 | 0 |
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| 1969 | 66.5 | 44 | 89.5 | 31 | 43.6 | 55 | 0.09 | 45 | 0 |
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| 1968 | 69.5 | 14 | 92.5 | 12 | 46.5 | 28 | 0.00 | 81 | 0 |
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| 1967 | 68.6 | 22 | 92.8 | 6 | 44.3 | 53 | 0.25 | 30 | 0 |
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| 1966 | 63.2 | 78 | 88.2 | 43 | 38.8 | 87 | 0.63 | 13 | 2 |
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| 1965 | | | 83.6 | 84 | | | 0.38 | 23 | 6 |
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| 1964 | 65.8 | 51 | 88 | 47 | 43.6 | 55 | 0.22 | 31 | 0 |
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| 1963 | 61.6 | 85 | 84.5 | 78 | 38.7 | 88 | 0.07 | 50 | 0 |
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| 1962 | 65.5 | 55 | 90.5 | 22 | 40.6 | 82 | 0.03 | 58 | 0 |
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| 1961 | 67.1 | 39 | 91.8 | 18 | 42.4 | 74 | trace | 68 | 0 |
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| 1960 | 69.8 | 11 | 94 | 3 | 45.5 | 37 | 0.37 | 24 | 0 |
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| 1959 | 68.6 | 22 | 92.4 | 14 | 44.8 | 46 | 0.09 | 45 | 0 |
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| 1958 | 68 | 32 | 88.1 | 45 | 48 | 11 | 0.85 | 7 | 0 |
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| 1957 | 64.9 | 64 | 87.6 | 52 | 42.3 | 75 | trace | 68 | 0 |
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| 1956 | 68.2 | 28 | 90 | 29 | 46.4 | 29 | 1.49 | 1 | 0 |
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| 1955 | 62.5 | 83 | 83.8 | 82 | 41.2 | 81 | 0.39 | 22 | 0 |
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| 1954 | 65.8 | 51 | 88.4 | 41 | 43.3 | 60 | 0.60 | 15 | 0 |
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| 1953 | | | | | | | 0.00 | 81 | 6 |
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| 1952 | 68.5 | 25 | 86.8 | 59 | 50.1 | 2 | 1.21 | 4 | 0 |
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| 1951 | 65.4 | 57 | 88.2 | 43 | 42.7 | 70 | 0.00 | 81 | 0 |
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| 1950 | 68 | 32 | 88 | 47 | 48.1 | 9 | 0.00 | 81 | 0 |
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| 1949 | 64.8 | 66 | 86.2 | 68 | 43.5 | 58 | 0.09 | 45 | 0 |
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| 1948 | 61.9 | 84 | 81.9 | 87 | 41.8 | 79 | 0.20 | 35 | 0 |
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| 1947 | 62.9 | 80 | 85.7 | 72 | 40 | 84 | 0.00 | 81 | 0 |
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| 1946 | 65.8 | 51 | 86.3 | 67 | 45.4 | 39 | 0.67 | 12 | 0 |
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| 1945 | 67 | 40 | 88.7 | 38 | 45.4 | 39 | 0.35 | 25 | 0 |
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| 1944 | 63.7 | 74 | 83.7 | 83 | 43.7 | 54 | 0.30 | 26 | 0 |
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| 1943 | 64.6 | 68 | 84.6 | 77 | 44.6 | 48 | 0.27 | 27 | 0 |
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| 1942 | 65.8 | 51 | 88.4 | 41 | 43.2 | 61 | 0.00 | 81 | 0 |
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| 1941 | | | 87.7 | 51 | | | 0.00 | 81 | 4 |
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| 1940 | 63.7 | 74 | 84.8 | 74 | 42.7 | 70 | 0.00 | 81 | 1 |
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| 1939 | 66.2 | 47 | 86.8 | 59 | 45.6 | 36 | 0.78 | 9 | 0 |
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| 1938 | 66.5 | 44 | 85.9 | 70 | 47.1 | 21 | 0.98 | 6 | 0 |
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| 1937 | 68.7 | 20 | 89.2 | 37 | 48.2 | 8 | 0.15 | 38 | 0 |
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| 1936 | | | | | | | 0.19 | 36 | 8 |
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| 1935 | 64.5 | 69 | 85.9 | 70 | 43 | 64 | 0.12 | 43 | 0 |
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