Every December in Jerome, ID from 1915 to 2025, 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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| 2025 | 39.8 | 1 | 47.7 | 3 | 31.8 | 1 | 1.63 | 26 | 0 |
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| 2024 | 34.3 | 10 | 41.5 | 19 | 27.1 | 7 | 2.29 | 12 | 0 |
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| 2023 | 33.9 | 14 | 40.6 | 27 | 27.1 | 7 | 1.01 | 52 | 0 |
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| 2022 | 26.3 | 86 | 32.5 | 92 | 20.1 | 64 | 1.25 | 40 | 0 |
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| 2021 | 32 | 29 | 39.5 | 42 | 24.5 | 26 | 1.05 | 50 | 0 |
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| 2020 | 30.9 | 41 | 39.1 | 49 | 22.6 | 44 | 0.63 | 77 | 0 |
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| 2019 | 30.3 | 48 | 35.9 | 70 | 24.6 | 24 | 0.90 | 57 | 0 |
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| 2018 | 28.3 | 67 | 33.8 | 84 | 22.8 | 41 | 0.46 | 90 | 0 |
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| 2017 | 27.5 | 72 | 34.7 | 78 | 20.7 | 59 | 0.18 | 105 | 2 |
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| 2016 | 23.2 | 98 | 30.5 | 104 | 16 | 94 | 1.64 | 24 | 0 |
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| 2015 | 27 | 78 | 32.6 | 91 | 21.5 | 51 | 1.34 | 36 | 0 |
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| 2014 | 34.1 | 12 | 41.3 | 20 | 26.9 | 9 | 1.66 | 23 | 0 |
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| 2013 | 22.7 | 101 | 30.8 | 103 | 14.7 | 98 | 0.27 | 101 | 0 |
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| 2012 | 30.1 | 51 | 36.4 | 68 | 23.8 | 31 | 1.62 | 27 | 0 |
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| 2011 | 27.5 | 72 | 37.2 | 61 | 17.7 | 83 | 0.26 | 102 | 0 |
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| 2010 | 31.1 | 37 | 36.7 | 64 | 25.5 | 18 | 1.77 | 18 | 0 |
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| 2009 | 23.2 | 98 | 29.7 | 105 | 16.7 | 91 | 1.22 | 43 | 0 |
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| 2008 | 26.4 | 84 | 34.8 | 77 | 17.9 | 80 | 1.69 | 21 | 0 |
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| 2007 | 26.5 | 81 | 32.5 | 92 | 20.4 | 62 | 0.67 | 72 | 3 |
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| 2006 | | | | | | | 1.68 | 22 | 6 |
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| 2005 | 24.8 | 90 | 31.1 | 100 | 18.4 | 75 | 3.09 | 5 | 0 |
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| 2004 | 32.1 | 28 | 39.1 | 49 | 25.2 | 20 | 2.25 | 14 | 0 |
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| 2003 | 33.4 | 18 | 40 | 38 | 26.9 | 9 | 2.77 | 10 | 0 |
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| 2002 | 33.4 | 18 | 40.9 | 24 | 25.8 | 16 | 1.23 | 42 | 1 |
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| 2001 | 23.3 | 97 | 29.5 | 106 | 17.2 | 87 | 1.64 | 24 | 0 |
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| 2000 | 27.1 | 77 | 32.9 | 90 | 21.4 | 53 | 0.66 | 74 | 0 |
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| 1999 | 28 | 68 | 35 | 75 | 21 | 56 | 0.68 | 71 | 0 |
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| 1998 | 26.7 | 79 | 34.5 | 79 | 19 | 71 | 0.88 | 61 | 0 |
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| 1997 | 27.8 | 70 | 36.3 | 69 | 19.4 | 68 | 0.38 | 98 | 0 |
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| 1996 | 30.5 | 45 | 39.2 | 48 | 21.7 | 48 | 4.77 | 2 | 2 |
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| 1995 | 32.6 | 24 | 41 | 23 | 24.2 | 28 | 2.88 | 9 | 0 |
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| 1994 | 27.4 | 74 | 35.5 | 72 | 19.2 | 70 | 1.41 | 34 | 0 |
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| 1993 | 29.6 | 56 | 38.7 | 53 | 20.6 | 61 | 0.44 | 92 | 2 |
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| 1992 | 23 | 100 | 32.4 | 94 | 13.6 | 102 | 2.27 | 13 | 0 |
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| 1991 | 30.8 | 42 | 40 | 38 | 21.5 | 51 | 0.21 | 104 | 0 |
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| 1990 | 18.4 | 108 | 29.2 | 107 | 6.8 | 108 | 0.71 | 69 | 2 |
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| 1989 | 29.3 | 59 | 41.9 | 16 | 17.1 | 88 | 0.03 | 107 | 1 |
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| 1988 | 24.4 | 92 | 33 | 88 | 15.8 | 96 | 0.53 | 87 | 0 |
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| 1987 | 29.4 | 58 | 38.9 | 52 | 19.8 | 66 | 0.90 | 57 | 0 |
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| 1986 | 29 | 62 | 40.3 | 35 | 17.8 | 82 | 0.05 | 106 | 1 |
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| 1985 | 14.9 | 109 | 24.5 | 109 | 5.3 | 109 | 0.91 | 56 | 0 |
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| 1984 | 21.3 | 106 | 31.5 | 97 | 11.2 | 107 | 0.41 | 95 | 0 |
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| 1983 | 22.6 | 102 | 29.1 | 108 | 16 | 94 | 2.95 | 8 | 2 |
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| 1982 | 28.6 | 66 | 37.1 | 62 | 20.2 | 63 | 1.53 | 31 | 0 |
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| 1981 | 32.8 | 23 | 40.7 | 26 | 24.9 | 23 | 3.00 | 6 | 0 |
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| 1980 | 34.5 | 9 | 44.4 | 8 | 24.6 | 24 | 1.26 | 39 | 0 |
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| 1979 | 31 | 38 | 40.6 | 27 | 21.4 | 53 | 0.35 | 100 | 0 |
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| 1978 | 23.7 | 94 | 33.2 | 86 | 14.2 | 100 | 0.64 | 76 | 0 |
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| 1977 | 33.2 | 20 | 40.3 | 35 | 26.2 | 13 | 3.00 | 6 | 0 |
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| 1976 | 31.9 | 31 | 45.4 | 6 | 18 | 79 | trace | 108 | 1 |
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| 1975 | 33.8 | 16 | 42.2 | 13 | 25.3 | 19 | 0.38 | 98 | 0 |
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| 1974 | 31.3 | 34 | 38.5 | 55 | 24.1 | 30 | 1.25 | 40 | 0 |
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| 1973 | 33.9 | 14 | 41.8 | 17 | 26 | 14 | 1.75 | 20 | 0 |
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| 1972 | 24 | 93 | 31.4 | 98 | 16.5 | 93 | 1.55 | 30 | 0 |
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| 1971 | 26.7 | 79 | 34.5 | 79 | 18.8 | 72 | 1.59 | 28 | 0 |
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| 1970 | 30.1 | 51 | 37.3 | 60 | 23 | 37 | 1.28 | 38 | 0 |
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| 1969 | 32 | 29 | 39.7 | 40 | 24.4 | 27 | 1.76 | 19 | 0 |
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| 1968 | 29.5 | 57 | 37.1 | 62 | 21.8 | 47 | 3.67 | 3 | 0 |
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| 1967 | 23.5 | 96 | 32.2 | 95 | 14.8 | 97 | 0.57 | 83 | 0 |
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| 1966 | 29.9 | 54 | 36.7 | 64 | 23 | 37 | 0.90 | 57 | 0 |
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| 1965 | 31 | 38 | 40.4 | 31 | 21.6 | 50 | 0.86 | 62 | 0 |
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| 1964 | 32.6 | 24 | 40.1 | 37 | 25.1 | 21 | 5.24 | 1 | 0 |
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| 1963 | 26.5 | 81 | 34.5 | 79 | 18.4 | 75 | 1.20 | 44 | 0 |
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| 1962 | 32.9 | 21 | 42.1 | 14 | 23.3 | 35 | 0.43 | 94 | 2 |
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| 1961 | 28.7 | 65 | 36.6 | 67 | 20.8 | 58 | 0.89 | 60 | 0 |
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| 1960 | 30.2 | 49 | 40.4 | 31 | 20.1 | 64 | 0.54 | 85 | 0 |
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| 1959 | 30.5 | 45 | 41.7 | 18 | 19.3 | 69 | 0.58 | 82 | 0 |
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| 1958 | 37.1 | 4 | 46 | 5 | 28.2 | 3 | 0.67 | 72 | 0 |
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| 1957 | | | | | | | | | 5 |
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| 1956 | 30.1 | 51 | 40.4 | 31 | 19.8 | 66 | 0.77 | 66 | 0 |
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| 1955 | 32.2 | 27 | 40.9 | 24 | 23.5 | 33 | 3.21 | 4 | 0 |
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| 1954 | 27.3 | 76 | 37.7 | 58 | 16.9 | 90 | 1.01 | 52 | 0 |
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| 1953 | 30.2 | 49 | 39 | 51 | 21.4 | 53 | 1.07 | 49 | 3 |
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| 1952 | 31 | 38 | 39.5 | 42 | 22.5 | 45 | 1.31 | 37 | 0 |
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| 1951 | 25.1 | 89 | 33 | 88 | 17.3 | 86 | 1.86 | 17 | 0 |
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| 1950 | 35.6 | 6 | 44.4 | 8 | 26.7 | 11 | 0.78 | 65 | 1 |
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| 1949 | 29 | 62 | 40.6 | 27 | 17.4 | 85 | 0.40 | 96 | 0 |
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| 1948 | 22.1 | 104 | 31.7 | 96 | 12.5 | 104 | 2.65 | 11 | 0 |
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| 1947 | 29.1 | 60 | 35.8 | 71 | 22.5 | 45 | 0.63 | 77 | 0 |
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| 1946 | 35 | 8 | 42.3 | 12 | 27.8 | 4 | 0.76 | 68 | 0 |
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| 1945 | 26.5 | 81 | 34.5 | 79 | 18.5 | 73 | 1.56 | 29 | 0 |
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| 1944 | 28.9 | 64 | 39.3 | 47 | 18.5 | 73 | 1.03 | 51 | 0 |
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| 1943 | 32.9 | 21 | 42.5 | 11 | 23.3 | 35 | 0.45 | 91 | 0 |
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| 1942 | 30.6 | 43 | 37.9 | 56 | 22.8 | 41 | 2.24 | 15 | 2 |
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| 1941 | 31.8 | 32 | 39.4 | 46 | 24.2 | 28 | 1.50 | 32 | 0 |
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| 1940 | 34.3 | 10 | 42.7 | 10 | 25.9 | 15 | 0.98 | 54 | 0 |
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| 1939 | 36.9 | 5 | 48 | 2 | 25.7 | 17 | 0.40 | 96 | 0 |
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| 1938 | 32.4 | 26 | 41.1 | 21 | 23.6 | 32 | 0.65 | 75 | 0 |
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| 1937 | 33.5 | 17 | 42.1 | 14 | 25 | 22 | 1.14 | 45 | 0 |
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| 1936 | 31.8 | 32 | 40.6 | 27 | 23 | 37 | 0.62 | 79 | 0 |
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| 1935 | 29.1 | 60 | 39.7 | 40 | 18.4 | 75 | 0.53 | 87 | 1 |
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| 1934 | 31.2 | 35 | 39.5 | 42 | 22.8 | 41 | 0.57 | 83 | 0 |
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| 1933 | 37.3 | 3 | 46.9 | 4 | 27.6 | 5 | 0.70 | 70 | 0 |
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| 1932 | 21.1 | 107 | 31 | 101 | 11.5 | 106 | 0.61 | 80 | 1 |
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| 1931 | 26.2 | 87 | 34.4 | 83 | 17.9 | 80 | | | 0 |
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| 1930 | 22.4 | 103 | 31.2 | 99 | 13.6 | 102 | 0.26 | 102 | 0 |
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| 1929 | 35.6 | 6 | 45.2 | 7 | 26.4 | 12 | 0.92 | 55 | 2 |
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| 1928 | 24.8 | 90 | 35.2 | 74 | 13.9 | 101 | 0.81 | 64 | 1 |
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| 1927 | 26.4 | 84 | 35.3 | 73 | 17.6 | 84 | 0.44 | 92 | 0 |
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| 1926 | 28 | 68 | 34.9 | 76 | 21 | 56 | 1.10 | 47 | 0 |
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| 1925 | 34.1 | 12 | 41.1 | 21 | 27.2 | 6 | 0.77 | 66 | 0 |
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| 1924 | 21.7 | 105 | 31 | 101 | 12.3 | 105 | 2.09 | 16 | 0 |
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| 1923 | 27.4 | 74 | 36.7 | 64 | 18.2 | 78 | 1.08 | 48 | 0 |
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| 1922 | 27.8 | 70 | 38.6 | 54 | 17 | 89 | 0.61 | 80 | 0 |
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| 1921 | 31.2 | 35 | 39.5 | 42 | 22.9 | 40 | 0.82 | 63 | 1 |
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| 1920 | 30.6 | 43 | 37.8 | 57 | 23.5 | 33 | 1.12 | 46 | 0 |
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| 1919 | 23.7 | 94 | 33.1 | 87 | 14.3 | 99 | 0.48 | 89 | 2 |
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| 1918 | 30.5 | 45 | 40.4 | 31 | 20.7 | 59 | 0.54 | 85 | 2 |
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| 1917 | 39.6 | 2 | 48.8 | 1 | 30.5 | 2 | 1.42 | 33 | 2 |
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| 1916 | 25.3 | 88 | 33.4 | 85 | 16.6 | 92 | | | 1 |
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| 1915 | 29.7 | 55 | 37.7 | 58 | 21.7 | 48 | 1.40 | 35 | 0 |
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