Every 1 September to 10 October in Jerome, ID from 1915 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 | 63 | 15 | 77.3 | 42 | 48.8 | 4 | 0.43 | 56 | 0 |
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| 2025 | 64.1 | 7 | 77.1 | 48 | 51.1 | 1 | 0.52 | 45 | 0 |
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| 2024 | 63.9 | 10 | 79.1 | 23 | 48.8 | 4 | 0.21 | 84 | 0 |
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| 2023 | 61.7 | 30 | 74.8 | 70 | 48.6 | 8 | 2.02 | 7 | 0 |
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| 2022 | 65.2 | 3 | 80.5 | 14 | 49.8 | 3 | 0.07 | 94 | 0 |
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| 2021 | 62.1 | 26 | 76.9 | 51 | 47.3 | 15 | 1.63 | 11 | 0 |
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| 2020 | 64.3 | 4 | 80.9 | 12 | 47.8 | 11 | 0.36 | 67 | 0 |
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| 2019 | 57.3 | 92 | 70.2 | 103 | 44.5 | 40 | 0.62 | 39 | 0 |
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| 2018 | 60.7 | 46 | 74.6 | 71 | 46.8 | 20 | 1.00 | 23 | 0 |
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| 2017 | 58 | 84 | 70.8 | 98 | 45.3 | 32 | 1.10 | 20 | 0 |
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| 2016 | 58.3 | 82 | 70.8 | 98 | 45.8 | 26 | 1.59 | 12 | 0 |
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| 2015 | 62.9 | 16 | 77.2 | 47 | 48.7 | 6 | 0.91 | 26 | 0 |
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| 2014 | 61.5 | 34 | 75.7 | 61 | 47.3 | 15 | 0.50 | 48 | 0 |
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| 2013 | 58.9 | 73 | 70.9 | 97 | 46.9 | 19 | 0.52 | 45 | 0 |
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| 2012 | 60.9 | 44 | 76.4 | 54 | 45.5 | 30 | trace | 103 | 0 |
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| 2011 | 62.7 | 19 | 77 | 50 | 48.5 | 9 | 1.30 | 15 | 0 |
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| 2010 | 61.8 | 28 | 76.3 | 57 | 47.4 | 14 | 0.35 | 68 | 0 |
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| 2009 | 59.3 | 65 | 73 | 84 | 45.6 | 29 | 0.76 | 33 | 0 |
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| 2008 | 58.6 | 79 | 73 | 84 | 44.3 | 45 | 0.69 | 35 | 0 |
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| 2007 | 57.2 | 93 | 71 | 96 | 43.5 | 56 | 1.10 | 20 | 0 |
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| 2006 | 58.8 | 74 | 72.6 | 87 | 45 | 38 | 1.04 | 22 | 0 |
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| 2005 | 56.4 | 97 | 70.8 | 98 | 41.9 | 84 | 0.23 | 81 | 0 |
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| 2004 | 59.2 | 68 | 73.1 | 83 | 45.3 | 32 | 0.45 | 54 | 0 |
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| 2003 | 61.3 | 36 | 76.1 | 58 | 46.6 | 21 | 0.11 | 89 | 0 |
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| 2002 | 58.5 | 80 | 71.6 | 92 | 45.3 | 32 | 0.54 | 43 | 1 |
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| 2001 | 62.6 | 21 | 77.5 | 40 | 47.6 | 12 | 0.31 | 73 | 1 |
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| 2000 | 58.7 | 76 | 73 | 84 | 44.4 | 43 | 0.49 | 49 | 4 |
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| 1999 | 58.8 | 74 | 74.2 | 77 | 43.5 | 56 | 0.02 | 100 | 0 |
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| 1998 | 61.7 | 30 | 75 | 68 | 48.3 | 10 | 0.54 | 43 | 0 |
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| 1997 | 62.4 | 24 | 78 | 34 | 47.1 | 17 | 0.61 | 40 | 2 |
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| 1996 | 60.2 | 56 | 77.9 | 35 | 42.8 | 74 | 0.09 | 92 | 2 |
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| 1995 | 60.3 | 54 | 76.7 | 53 | 43.7 | 51 | 0.44 | 55 | 1 |
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| 1994 | 61.4 | 35 | 78.5 | 30 | 44.3 | 45 | 1.92 | 9 | 0 |
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| 1993 | 59.2 | 68 | 77.3 | 42 | 41.8 | 86 | 0.14 | 88 | 3 |
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| 1992 | 59.1 | 70 | 76.4 | 54 | 42.2 | 82 | 0.23 | 81 | 1 |
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| 1991 | 62.5 | 22 | 78.9 | 27 | 46.1 | 23 | 0.88 | 27 | 0 |
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| 1990 | 64.3 | 4 | 81.5 | 11 | 47.1 | 17 | 0.21 | 84 | 0 |
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| 1989 | 59.3 | 65 | 75.7 | 61 | 42.9 | 71 | 0.88 | 27 | 0 |
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| 1988 | 60.4 | 51 | 77.6 | 39 | 43.3 | 62 | 0.46 | 52 | 0 |
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| 1987 | 63.4 | 12 | 82.3 | 8 | 44.5 | 40 | trace | 103 | 0 |
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| 1986 | 55.6 | 101 | 70.2 | 103 | 41 | 94 | 0.84 | 31 | 0 |
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| 1985 | 53 | 107 | 67 | 107 | 39 | 105 | 1.75 | 10 | 0 |
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| 1984 | 58.7 | 76 | 75.6 | 65 | 41.8 | 86 | 0.11 | 89 | 1 |
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| 1983 | 59.5 | 64 | 75.8 | 60 | 43.3 | 62 | | | 0 |
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| 1982 | 56.3 | 99 | 70.1 | 105 | 42.2 | 82 | 1.00 | 23 | 2 |
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| 1981 | 60.4 | 51 | 77.3 | 42 | 43.6 | 53 | 0.49 | 49 | 2 |
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| 1980 | 61.1 | 40 | 77.1 | 48 | 45.2 | 36 | 1.17 | 19 | 0 |
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| 1979 | 64.3 | 4 | 83.9 | 1 | 44.7 | 39 | 0.05 | 98 | 0 |
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| 1978 | 57.9 | 85 | 74.3 | 76 | 41.5 | 89 | 2.14 | 6 | 0 |
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| 1977 | 57.7 | 88 | 75 | 68 | 40.6 | 98 | 0.29 | 76 | 1 |
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| 1976 | 61.2 | 38 | 76.8 | 52 | 45.8 | 26 | 1.36 | 14 | 2 |
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| 1975 | 61.9 | 27 | 79.5 | 20 | 44.3 | 45 | 0.34 | 70 | 0 |
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| 1974 | 62.5 | 22 | 79.7 | 18 | 45.2 | 36 | 0.41 | 60 | 0 |
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| 1973 | 59.3 | 65 | 74.6 | 71 | 44.1 | 49 | 0.47 | 51 | 0 |
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| 1972 | 57.7 | 88 | 71.8 | 91 | 43.6 | 53 | 2.21 | 4 | 0 |
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| 1971 | 57.8 | 87 | 74.1 | 78 | 41.5 | 89 | 0.35 | 68 | 0 |
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| 1970 | 56.9 | 94 | 72.4 | 88 | 41.3 | 93 | 0.77 | 32 | 0 |
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| 1969 | 61.8 | 28 | 78.2 | 32 | 45.4 | 31 | 0.38 | 64 | 0 |
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| 1968 | 59 | 72 | 75.4 | 67 | 42.5 | 77 | 0.40 | 62 | 0 |
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| 1967 | 64.1 | 7 | 80.7 | 13 | 47.5 | 13 | 0.40 | 62 | 0 |
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| 1966 | 63.3 | 13 | 80.5 | 14 | 46.1 | 23 | 0.22 | 83 | 0 |
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| 1965 | 56.8 | 96 | 73.4 | 80 | 40.2 | 102 | 0.52 | 45 | 0 |
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| 1964 | 58.1 | 83 | 75.7 | 61 | 40.5 | 101 | 0.65 | 37 | 0 |
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| 1963 | 66.6 | 1 | 82.4 | 7 | 50.9 | 2 | 0.67 | 36 | 0 |
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| 1962 | 60.3 | 54 | 77.3 | 42 | 43.5 | 56 | 0.28 | 77 | 1 |
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| 1961 | 55.1 | 104 | 70.3 | 102 | 39.9 | 103 | 2.19 | 5 | 0 |
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| 1960 | 62.4 | 24 | 79.6 | 19 | 45.3 | 32 | 0.30 | 75 | 0 |
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| 1959 | 56.4 | 97 | 69.7 | 106 | 43.1 | 67 | 2.98 | 2 | 0 |
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| 1958 | 60.5 | 49 | 77.5 | 40 | 43.5 | 56 | 0.07 | 94 | 0 |
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| 1957 | 60.8 | 45 | 78.6 | 29 | 43 | 69 | 0.34 | 70 | 0 |
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| 1956 | 61.7 | 30 | 80 | 17 | 43.5 | 56 | 0.46 | 52 | 1 |
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| 1955 | | | | | 41.6 | 88 | 0.26 | 79 | 6 |
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| 1954 | 60.1 | 60 | 78.9 | 27 | 41.4 | 91 | 0.00 | 107 | 2 |
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| 1953 | 62.8 | 18 | 82.7 | 5 | 43.1 | 67 | 0.00 | 107 | 1 |
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| 1952 | 62.9 | 16 | 83.4 | 3 | 42.3 | 80 | 0.02 | 100 | 0 |
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| 1951 | 60 | 61 | 77.7 | 38 | 42.3 | 80 | 0.42 | 58 | 0 |
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| 1950 | | | | | | | 0.16 | 87 | 22 |
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| 1949 | 60.2 | 56 | 79 | 24 | 41.4 | 91 | 0.58 | 41 | 1 |
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| 1948 | 54.2 | 106 | 71.6 | 92 | 36.8 | 108 | 0.43 | 56 | 2 |
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| 1947 | 61.6 | 33 | 78.5 | 30 | 44.4 | 43 | 0.42 | 58 | 1 |
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| 1946 | 57.4 | 90 | 72.2 | 90 | 42.6 | 76 | 2.02 | 7 | 0 |
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| 1945 | 58.7 | 76 | 76.4 | 54 | 40.9 | 95 | 0.31 | 73 | 0 |
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| 1944 | 61.1 | 40 | 79 | 24 | 43.2 | 64 | 0.32 | 72 | 0 |
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| 1943 | 63.8 | 11 | 83.9 | 1 | 43.7 | 51 | trace | 103 | 0 |
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| 1942 | 63.1 | 14 | 82.8 | 4 | 43.4 | 61 | 0.07 | 94 | 0 |
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| 1941 | 55.4 | 102 | 71.6 | 92 | 39.1 | 104 | 0.37 | 65 | 0 |
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| 1940 | 59.1 | 70 | 74.6 | 71 | 43.6 | 53 | 2.37 | 3 | 0 |
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| 1939 | 60.2 | 56 | 76 | 59 | 44.5 | 40 | 1.43 | 13 | 0 |
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| 1938 | 65.5 | 2 | 82.3 | 8 | 48.7 | 6 | 0.65 | 37 | 0 |
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| 1937 | 62.7 | 19 | 82.5 | 6 | 43 | 69 | 0.27 | 78 | 0 |
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| 1936 | 60 | 61 | 79.2 | 22 | 40.7 | 97 | 0.25 | 80 | 1 |
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| 1935 | 64.1 | 7 | 82.3 | 8 | 45.9 | 25 | 0.00 | 107 | 0 |
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| 1934 | 60.7 | 46 | 78.1 | 33 | 43.2 | 64 | trace | 103 | 1 |
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| 1933 | 61.3 | 36 | 80.1 | 16 | 42.5 | 77 | 0.20 | 86 | 0 |
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| 1932 | 61.2 | 38 | 79.4 | 21 | 42.9 | 71 | 0.10 | 91 | 0 |
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| 1931 | 60.4 | 51 | 77.9 | 35 | 42.9 | 71 | 0.37 | 65 | 0 |
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| 1930 | 59.7 | 63 | 74.6 | 71 | 44.2 | 48 | 0.85 | 29 | 1 |
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| 1929 | 57.4 | 90 | 74.4 | 75 | 40.6 | 98 | 0.85 | 29 | 2 |
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| 1928 | 60.5 | 49 | 79 | 24 | 41.9 | 84 | 0.08 | 93 | 4 |
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| 1927 | 56.1 | 100 | 71.4 | 95 | 40.9 | 95 | 0.41 | 60 | 0 |
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| 1926 | 55.2 | 103 | 72.3 | 89 | 38.2 | 107 | 0.04 | 99 | 0 |
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| 1925 | 57.9 | 85 | 73.2 | 82 | 42.5 | 77 | 0.57 | 42 | 0 |
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| 1924 | 60.2 | 56 | 77.3 | 42 | 43.2 | 64 | 0.74 | 34 | 0 |
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| 1923 | 60.6 | 48 | 75.5 | 66 | 45.7 | 28 | 3.13 | 1 | 0 |
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| 1922 | 61 | 43 | 77.9 | 35 | 44.1 | 49 | 0.01 | 102 | 0 |
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| 1921 | 54.5 | 105 | 70.5 | 101 | 38.8 | 106 | 0.06 | 97 | 1 |
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| 1920 | 61.1 | 40 | 75.7 | 61 | 46.5 | 22 | 1.30 | 15 | 1 |
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| 1919 | 58.4 | 81 | 74 | 79 | 42.8 | 74 | 1.19 | 18 | 0 |
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| 1918 | | | | | | | 1.30 | 15 | 6 |
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| 1916 | 56.9 | 94 | 73.3 | 81 | 40.6 | 98 | 0.97 | 25 | 0 |
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| 1915 | | | | | | | | | 13 |
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