Every 1 September to 10 October in Challis, ID from 1899 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 | 58.2 | 19 | 74.9 | 28 | 41.5 | 14 | 0.85 | 42 | 0 |
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| 2025 | 58 | 21 | 73.8 | 37 | 42.1 | 10 | 1.48 | 22 | 0 |
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| 2024 | 60.4 | 3 | 78.7 | 3 | 42.2 | 9 | 0.36 | 74 | 0 |
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| 2023 | 57.3 | 27 | 72.9 | 50 | 41.7 | 12 | 1.25 | 26 | 0 |
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| 2022 | 60.1 | 4 | 78.2 | 5 | 42 | 11 | 0.31 | 78 | 0 |
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| 2021 | 58.4 | 17 | 76.7 | 12 | 40 | 32 | 0.44 | 68 | 0 |
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| 2020 | 60 | 6 | 79.8 | 1 | 40.2 | 26 | 0.05 | 101 | 0 |
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| 2019 | 52.9 | 84 | 67 | 92 | 38.8 | 60 | 1.25 | 26 | 0 |
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| 2018 | 56.9 | 32 | 74.1 | 36 | 39.7 | 38 | 0.62 | 56 | 0 |
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| 2017 | 52.1 | 91 | 66.3 | 96 | 38 | 70 | 1.21 | 31 | 0 |
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| 2016 | 53.6 | 75 | 67.9 | 87 | 39 | 51 | 1.24 | 29 | 1 |
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| 2015 | 58.3 | 18 | 75.3 | 25 | 41.2 | 16 | 1.42 | 23 | 0 |
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| 2014 | | | 73.4 | 41 | | | 1.11 | 34 | 6 |
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| 2013 | 54.4 | 69 | 68.2 | 86 | 40.6 | 20 | 1.89 | 13 | 0 |
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| 2012 | 55.9 | 44 | 74.9 | 28 | 36.9 | 88 | 0.23 | 87 | 0 |
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| 2011 | 58.6 | 15 | 76.2 | 17 | 41 | 17 | 0.73 | 49 | 0 |
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| 2010 | 56.7 | 33 | 73.7 | 38 | 39.7 | 38 | 1.54 | 20 | 0 |
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| 2009 | 56 | 42 | 73.3 | 44 | 38.7 | 62 | 0.36 | 74 | 0 |
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| 2008 | 54.6 | 63 | 71.4 | 63 | 37.9 | 71 | 0.52 | 62 | 0 |
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| 2007 | 52.6 | 89 | 68.5 | 84 | 36.7 | 93 | 0.40 | 70 | 0 |
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| 2006 | 53 | 82 | 68.6 | 83 | 37.5 | 76 | 2.77 | 2 | 0 |
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| 2005 | 53.2 | 81 | 69.1 | 80 | 37.2 | 84 | 1.25 | 26 | 0 |
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| 2004 | 54.5 | 68 | 70 | 69 | 39 | 51 | 0.58 | 59 | 1 |
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| 2003 | 57 | 31 | 74.4 | 32 | 39.7 | 38 | 0.13 | 92 | 2 |
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| 2002 | 54.6 | 63 | 71.9 | 59 | 37.4 | 79 | 0.27 | 82 | 0 |
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| 2001 | 57.4 | 25 | 74.6 | 31 | 40.3 | 24 | 2.34 | 4 | 0 |
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| 2000 | 53.6 | 75 | 69.7 | 73 | 37.5 | 76 | 0.88 | 41 | 0 |
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| 1999 | 54.8 | 60 | 72.4 | 54 | 37.1 | 86 | 0.01 | 106 | 2 |
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| 1998 | | | | | | | | | 18 |
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| 1995 | | | | | 40.5 | 21 | 0.42 | 69 | 6 |
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| 1994 | | | | | 42.4 | 7 | 0.33 | 76 | 7 |
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| 1993 | 57.5 | 23 | 75.1 | 26 | 38.8 | 60 | 0.24 | 86 | 4 |
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| 1992 | | | | | 40.2 | 26 | 0.99 | 38 | 7 |
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| 1991 | 59.4 | 10 | 76.3 | 15 | 42.3 | 8 | 0.71 | 51 | 2 |
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| 1990 | 60 | 6 | 76.8 | 11 | 43.3 | 4 | 0.31 | 78 | 0 |
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| 1989 | 56.7 | 33 | 72.6 | 51 | 40.9 | 19 | 0.70 | 52 | 0 |
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| 1988 | 57.7 | 22 | 75.4 | 23 | 40 | 32 | 0.10 | 94 | 0 |
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| 1987 | 59.2 | 11 | 77.5 | 8 | 41 | 17 | 0.00 | 108 | 0 |
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| 1986 | 49.9 | 98 | 62.4 | 102 | 37.4 | 79 | 1.95 | 12 | 0 |
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| 1985 | 48.4 | 101 | 62.2 | 103 | 34.7 | 102 | 1.82 | 15 | 2 |
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| 1984 | 53.8 | 73 | 69.4 | 76 | 38.2 | 68 | 0.30 | 81 | 0 |
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| 1983 | 55.2 | 55 | 70.1 | 68 | 40.1 | 30 | 1.00 | 37 | 1 |
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| 1982 | | | 64.6 | 98 | | | 2.19 | 9 | 10 |
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| 1981 | 55.3 | 53 | 71.2 | 64 | 39.5 | 45 | 0.12 | 93 | 0 |
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| 1980 | 55.7 | 49 | 71.8 | 61 | 39.7 | 38 | 1.80 | 16 | 0 |
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| 1979 | 60.6 | 2 | 79.6 | 2 | 41.7 | 12 | 0.03 | 103 | 1 |
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| 1978 | 54.6 | 63 | 70 | 69 | 39.2 | 48 | 1.35 | 25 | 0 |
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| 1977 | 52.1 | 91 | 67.9 | 87 | 36.8 | 91 | 1.22 | 30 | 3 |
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| 1976 | 54.9 | 59 | 70.8 | 65 | 39 | 51 | 2.28 | 7 | 0 |
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| 1975 | 55.6 | 51 | 73.5 | 40 | 37.7 | 73 | 0.74 | 47 | 0 |
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| 1974 | 55.3 | 53 | 73.4 | 41 | 37.5 | 76 | 0.23 | 87 | 1 |
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| 1973 | 53.6 | 75 | 69.3 | 77 | 37.7 | 73 | 0.72 | 50 | 1 |
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| 1972 | 56.3 | 38 | 73 | 48 | 39.6 | 44 | 0.53 | 60 | 0 |
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| 1971 | 53.4 | 79 | 70 | 69 | 36.8 | 91 | 0.31 | 78 | 0 |
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| 1970 | 53 | 82 | 69.2 | 79 | 36.9 | 88 | 0.47 | 65 | 0 |
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| 1969 | 56.3 | 38 | 72.6 | 51 | 40 | 32 | 0.37 | 72 | 0 |
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| 1968 | 54.3 | 71 | 69.5 | 75 | 39 | 51 | 2.28 | 7 | 0 |
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| 1967 | 59.1 | 13 | 75.8 | 21 | 42.5 | 6 | 1.53 | 21 | 0 |
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| 1966 | 59.8 | 8 | 76.9 | 10 | 42.8 | 5 | 0.90 | 40 | 0 |
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| 1965 | 52.7 | 87 | 69 | 81 | 36.4 | 96 | 0.67 | 54 | 0 |
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| 1964 | 55.5 | 52 | 73.6 | 39 | 37.3 | 82 | 0.06 | 100 | 0 |
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| 1963 | 61.4 | 1 | 76.6 | 13 | 46.2 | 1 | 1.57 | 19 | 0 |
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| 1962 | 58.1 | 20 | 75.7 | 22 | 40.4 | 23 | 0.27 | 82 | 1 |
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| 1961 | 51.8 | 94 | 67.1 | 90 | 36.6 | 95 | 1.89 | 13 | 0 |
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| 1960 | 59.8 | 8 | 76.3 | 15 | 43.4 | 3 | 0.85 | 42 | 0 |
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| 1959 | 53.6 | 75 | 67.1 | 90 | 40.3 | 24 | 1.40 | 24 | 1 |
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| 1958 | 57.2 | 29 | 74.4 | 32 | 39.9 | 36 | trace | 107 | 2 |
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| 1957 | 56 | 42 | 73.1 | 47 | 39 | 51 | 0.61 | 57 | 0 |
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| 1956 | 57.4 | 25 | 75.9 | 20 | 38.9 | 57 | 0.82 | 44 | 1 |
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| 1955 | 55.8 | 46 | 72.4 | 54 | 39.4 | 46 | 0.47 | 65 | 1 |
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| 1954 | 55.9 | 44 | 73.2 | 45 | 38.9 | 57 | 0.37 | 72 | 1 |
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| 1953 | 58.5 | 16 | 77 | 9 | 40.2 | 26 | 0.10 | 94 | 2 |
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| 1952 | 59.2 | 11 | 78.5 | 4 | 40 | 32 | 0.03 | 103 | 0 |
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| 1951 | 55.1 | 58 | 71.6 | 62 | 38.6 | 66 | 0.20 | 90 | 0 |
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| 1950 | 53.8 | 73 | 67.5 | 89 | 40.1 | 30 | 2.30 | 6 | 0 |
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| 1949 | 55.8 | 46 | 72 | 58 | 39.7 | 38 | 0.52 | 62 | 2 |
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| 1948 | 55.8 | 46 | 73 | 48 | 38.7 | 62 | 0.09 | 96 | 1 |
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| 1947 | 56.6 | 35 | 73.4 | 41 | 39.7 | 38 | 1.12 | 33 | 1 |
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| 1946 | | | | | 37.6 | 75 | 2.07 | 10 | 5 |
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| 1945 | 55.2 | 55 | 72.5 | 53 | 37.9 | 71 | 0.26 | 85 | 0 |
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| 1944 | | | | | 38.7 | 62 | 0.23 | 87 | 5 |
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| 1943 | 59.1 | 13 | 77.8 | 7 | 40.5 | 21 | 0.53 | 60 | 0 |
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| 1942 | 57.1 | 30 | 75.1 | 26 | 39.2 | 48 | 0.09 | 96 | 0 |
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| 1941 | 49.5 | 99 | 62.8 | 101 | 36.2 | 97 | 0.75 | 46 | 0 |
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| 1940 | 54 | 72 | 66.5 | 94 | 41.5 | 14 | 2.95 | 1 | 0 |
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| 1939 | 56.1 | 40 | 72.1 | 57 | 40.2 | 26 | 0.74 | 47 | 0 |
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| 1938 | 60.1 | 4 | 76.4 | 14 | 43.8 | 2 | 0.03 | 103 | 3 |
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| 1937 | 57.3 | 27 | 74.7 | 30 | 39.9 | 36 | 0.94 | 39 | 0 |
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| 1936 | 54.6 | 63 | 73.2 | 45 | 36 | 98 | 0.27 | 82 | 0 |
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| 1935 | 57.5 | 23 | 76.2 | 17 | 38.9 | 57 | 0.09 | 96 | 0 |
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| 1934 | 54.8 | 60 | 70.3 | 67 | 39.2 | 48 | 0.69 | 53 | 0 |
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| 1933 | 56.1 | 40 | 75.4 | 23 | 36.7 | 93 | 0.05 | 101 | 2 |
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| 1932 | 55.2 | 55 | 76.2 | 17 | 34.2 | 103 | 0.33 | 76 | 2 |
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| 1931 | 51 | 95 | 64.6 | 98 | 37.4 | 79 | 1.66 | 18 | 0 |
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| 1930 | 54.8 | 60 | 72.2 | 56 | 37.1 | 86 | 2.05 | 11 | 1 |
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| 1929 | | | | | | | | | 10 |
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| 1928 | | | | | | | 0.18 | 91 | 5 |
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| 1927 | 56.6 | 35 | 78.1 | 6 | 35 | 101 | | | 0 |
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| 1926 | 52.7 | 87 | 71.9 | 59 | 33.4 | 105 | 0.39 | 71 | 0 |
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| 1925 | 52.2 | 90 | 65.3 | 97 | 39 | 51 | 1.67 | 17 | 3 |
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| 1924 | 50 | 96 | 64.3 | 100 | 35.8 | 100 | 0.50 | 64 | 2 |
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| 1923 | 54.6 | 63 | 70.6 | 66 | 38.5 | 67 | 1.05 | 36 | 0 |
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| 1922 | 55.7 | 49 | 74.2 | 34 | 36.9 | 88 | 0.07 | 99 | 1 |
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| 1921 | 50 | 96 | 66.5 | 94 | 33.5 | 104 | 0.64 | 55 | 0 |
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| 1920 | 53.4 | 79 | 68.8 | 82 | 38.1 | 69 | 1.17 | 32 | 0 |
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| 1919 | 52.9 | 84 | 68.5 | 84 | 37.2 | 84 | 0.61 | 57 | 0 |
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| 1918 | 54.4 | 69 | 69.3 | 77 | 39.4 | 46 | 2.59 | 3 | 0 |
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| 1917 | 56.4 | 37 | 74.2 | 34 | 38.7 | 62 | 1.08 | 35 | 0 |
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| 1916 | 52.9 | 84 | 70 | 69 | 35.9 | 99 | 0.45 | 67 | 0 |
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| 1915 | 51.9 | 93 | 66.6 | 93 | 37.3 | 82 | 2.33 | 5 | 0 |
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| 1914 | 49.5 | 99 | 69.7 | 73 | 29.5 | 106 | 0.80 | 45 | 1 |
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| 1899 | | | | | | | | | 10 |
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