Every April in Jerome, ID from 1916 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 | 48.3 | 46 | 61 | 54 | 35.5 | 29 | 0.69 | 60 | 0 |
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| 2025 | 48.9 | 41 | 62 | 44 | 35.7 | 24 | 0.08 | 108 | 0 |
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| 2024 | 48.1 | 49 | 60.8 | 56 | 35.5 | 29 | 0.26 | 95 | 0 |
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| 2023 | 45.5 | 81 | 57.9 | 86 | 33.1 | 71 | 0.18 | 102 | 0 |
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| 2022 | 44.2 | 95 | 55.9 | 98 | 32.4 | 84 | 0.66 | 63 | 0 |
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| 2021 | 48.4 | 44 | 62.1 | 42 | 34.7 | 48 | 0.20 | 101 | 0 |
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| 2020 | 49.2 | 38 | 62.4 | 41 | 35.9 | 19 | 0.22 | 99 | 0 |
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| 2019 | 49.6 | 31 | 59.8 | 67 | 39.3 | 5 | 1.35 | 22 | 1 |
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| 2018 | 49.5 | 33 | 61.9 | 45 | 37.1 | 13 | 0.63 | 65 | 0 |
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| 2017 | 45.9 | 75 | 57 | 90 | 34.8 | 44 | 1.10 | 34 | 0 |
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| 2016 | 52.1 | 8 | 64.6 | 27 | 39.5 | 4 | 0.59 | 67 | 0 |
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| 2015 | 47.8 | 51 | 61.2 | 52 | 34.4 | 52 | 0.17 | 105 | 0 |
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| 2014 | 47.4 | 57 | 59.8 | 67 | 35 | 40 | 0.69 | 60 | 0 |
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| 2013 | 45.7 | 77 | 57.8 | 87 | 33.5 | 65 | 0.70 | 59 | 0 |
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| 2012 | 51 | 18 | 64.4 | 30 | 37.5 | 9 | 0.63 | 65 | 0 |
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| 2011 | 41.5 | 106 | 51.9 | 107 | 31 | 100 | 1.05 | 37 | 0 |
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| 2010 | 45.3 | 83 | 56.6 | 94 | 34 | 60 | 1.43 | 17 | 0 |
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| 2009 | 45.6 | 80 | 56.6 | 94 | 34.5 | 51 | 3.03 | 2 | 0 |
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| 2008 | 41.7 | 105 | 54.7 | 102 | 28.8 | 108 | 0.59 | 67 | 0 |
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| 2007 | 47.9 | 50 | 60.1 | 64 | 35.8 | 22 | 0.85 | 48 | 0 |
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| 2006 | 48.2 | 47 | 59.8 | 67 | 36.7 | 16 | 2.05 | 7 | 0 |
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| 2005 | 46.2 | 69 | 57.6 | 88 | 34.8 | 44 | 2.84 | 3 | 0 |
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| 2004 | 49.4 | 34 | 61.5 | 50 | 37.3 | 12 | 0.80 | 55 | 0 |
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| 2003 | 45.1 | 87 | 54.9 | 101 | 35.3 | 35 | 2.19 | 6 | 0 |
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| 2002 | 47.8 | 51 | 59.7 | 70 | 35.9 | 19 | 0.71 | 58 | 0 |
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| 2001 | 45.5 | 81 | 57.4 | 89 | 33.6 | 64 | 1.58 | 15 | 1 |
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| 2000 | 51.1 | 17 | 64.7 | 26 | 37.5 | 9 | 0.26 | 95 | 1 |
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| 1999 | 43.8 | 99 | 54.7 | 102 | 32.9 | 73 | 1.23 | 27 | 0 |
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| 1998 | 46.2 | 69 | 58.1 | 81 | 34.2 | 54 | 0.52 | 75 | 0 |
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| 1997 | 46.1 | 71 | 59.3 | 74 | 32.9 | 73 | 1.15 | 30 | 0 |
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| 1996 | 48.4 | 44 | 62.5 | 39 | 34.1 | 57 | 0.66 | 63 | 1 |
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| 1995 | 46.1 | 71 | 60.4 | 59 | 31.8 | 89 | 0.86 | 47 | 2 |
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| 1994 | 49.7 | 29 | 63.9 | 32 | 35.5 | 29 | 1.75 | 11 | 0 |
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| 1993 | 45.3 | 83 | 58.5 | 78 | 32.4 | 84 | 1.12 | 33 | 2 |
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| 1992 | 52.9 | 6 | 68.9 | 7 | 36.8 | 15 | 0.83 | 52 | 0 |
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| 1991 | 45 | 89 | 59 | 77 | 30.9 | 101 | 0.46 | 77 | 0 |
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| 1990 | 53.3 | 5 | 68.2 | 9 | 38.5 | 6 | 0.96 | 44 | 0 |
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| 1989 | 50.8 | 21 | 65.9 | 21 | 35.7 | 24 | 0.40 | 82 | 0 |
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| 1988 | 50.8 | 21 | 65.9 | 21 | 35.6 | 26 | 0.99 | 42 | 0 |
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| 1986 | 47.2 | 60 | 61.3 | 51 | 33.2 | 69 | 0.90 | 46 | 0 |
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| 1985 | 51 | 18 | 66.1 | 18 | 35.9 | 19 | 0.31 | 86 | 0 |
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| 1984 | 45 | 89 | 58 | 83 | 32.1 | 88 | 0.56 | 70 | 0 |
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| 1983 | 44.2 | 95 | 56.7 | 93 | 31.5 | 97 | 0.97 | 43 | 1 |
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| 1982 | 43.3 | 101 | 56.8 | 92 | 29.7 | 104 | 1.36 | 20 | 0 |
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| 1981 | 48.9 | 41 | 62.1 | 42 | 35.6 | 26 | 2.02 | 9 | 0 |
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| 1980 | 51.3 | 15 | 66 | 19 | 36 | 17 | 0.54 | 72 | 1 |
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| 1979 | 46 | 73 | 60.4 | 59 | 31.5 | 97 | 0.30 | 87 | 0 |
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| 1978 | 45.9 | 75 | 58.3 | 80 | 33.5 | 65 | 1.44 | 16 | 0 |
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| 1977 | 52 | 9 | 69.1 | 6 | 34.9 | 42 | 0.01 | 110 | 0 |
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| 1976 | 45.3 | 83 | 58 | 83 | 32.5 | 81 | 1.27 | 25 | 1 |
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| 1975 | 40.8 | 107 | 52.3 | 106 | 29.3 | 107 | 1.74 | 12 | 0 |
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| 1974 | 48.2 | 47 | 61.7 | 48 | 34.7 | 48 | 0.84 | 51 | 0 |
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| 1973 | 46.8 | 64 | 60.1 | 64 | 33.5 | 65 | 0.85 | 48 | 0 |
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| 1972 | 46.4 | 67 | 60.6 | 57 | 32.7 | 75 | 0.30 | 87 | 1 |
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| 1971 | 47.7 | 54 | 61.1 | 53 | 34.3 | 53 | 1.28 | 24 | 0 |
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| 1970 | 42.7 | 102 | 55.4 | 100 | 30.1 | 102 | 1.06 | 35 | 0 |
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| 1969 | 51.5 | 11 | 67 | 14 | 36 | 17 | 0.18 | 102 | 0 |
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| 1968 | 45.7 | 77 | 59.9 | 66 | 31.6 | 92 | 0.12 | 106 | 0 |
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| 1967 | 44 | 98 | 56.2 | 97 | 31.8 | 89 | 1.61 | 14 | 0 |
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| 1966 | 48.5 | 43 | 64.6 | 27 | 32.4 | 84 | 0.28 | 91 | 0 |
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| 1965 | 50.3 | 24 | 62.9 | 37 | 37.6 | 8 | 1.06 | 35 | 0 |
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| 1964 | 45.7 | 77 | 59.7 | 70 | 31.6 | 92 | 1.05 | 37 | 1 |
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| 1963 | 44.3 | 93 | 56.3 | 96 | 32.2 | 87 | 2.59 | 4 | 0 |
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| 1962 | 51.5 | 11 | 67.3 | 11 | 35.6 | 26 | 0.27 | 92 | 0 |
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| 1961 | 47.7 | 54 | 62.9 | 37 | 32.5 | 81 | 0.26 | 95 | 0 |
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| 1960 | 49.9 | 27 | 64.5 | 29 | 35.3 | 35 | 0.27 | 92 | 0 |
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| 1959 | 50.8 | 21 | 66.6 | 16 | 35 | 40 | 0.21 | 100 | 0 |
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| 1958 | 46.3 | 68 | 58.5 | 78 | 34 | 60 | 1.03 | 41 | 0 |
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| 1957 | 47.6 | 56 | 61 | 54 | 34.2 | 54 | 0.82 | 53 | 0 |
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| 1956 | 49.6 | 31 | 65.2 | 24 | 33.9 | 62 | 0.29 | 90 | 1 |
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| 1955 | 44.2 | 95 | 59.1 | 76 | 29.4 | 106 | 1.14 | 32 | 0 |
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| 1954 | 49.2 | 38 | 65.1 | 25 | 33.2 | 69 | 0.41 | 81 | 0 |
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| 1953 | 44.7 | 91 | 59.3 | 74 | 30.1 | 102 | 1.42 | 18 | 0 |
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| 1952 | 51 | 18 | 67.1 | 12 | 34.8 | 44 | 0.96 | 44 | 0 |
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| 1951 | 49.7 | 29 | 66.3 | 17 | 33.1 | 71 | 1.05 | 37 | 0 |
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| 1950 | 45.1 | 87 | 61.6 | 49 | 28.6 | 109 | 0.33 | 84 | 0 |
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| 1949 | 51.4 | 14 | 69.6 | 5 | 33.3 | 68 | 0.11 | 107 | 0 |
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| 1948 | 46.5 | 66 | 60.4 | 59 | 32.6 | 77 | 0.54 | 72 | 0 |
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| 1947 | 49.1 | 40 | 62.5 | 39 | 35.8 | 22 | 0.38 | 83 | 0 |
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| 1946 | 51.5 | 11 | 68.1 | 10 | 34.8 | 44 | 0.18 | 102 | 0 |
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| 1945 | 44.7 | 91 | 58.1 | 81 | 31.2 | 99 | 0.24 | 98 | 0 |
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| 1944 | 46.9 | 63 | 59.6 | 72 | 34.1 | 57 | 3.15 | 1 | 0 |
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| 1943 | 53.9 | 4 | 70.2 | 2 | 37.5 | 9 | 0.43 | 78 | 0 |
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| 1942 | 51.3 | 15 | 67 | 14 | 35.5 | 29 | 0.74 | 56 | 0 |
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| 1941 | | | | | 35.5 | 29 | 0.85 | 48 | 11 |
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| 1940 | 49.3 | 37 | 63.1 | 35 | 35.5 | 29 | 2.04 | 8 | 0 |
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| 1939 | 51.9 | 10 | 68.4 | 8 | 35.3 | 35 | 0.42 | 80 | 0 |
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| 1938 | | | | | | | 0.30 | 87 | 6 |
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| 1937 | | | | | 32.7 | 75 | 1.19 | 28 | 9 |
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| 1936 | 52.6 | 7 | 67.1 | 12 | 38.1 | 7 | 0.57 | 69 | 0 |
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| 1935 | 47.8 | 51 | 60.6 | 57 | 35.1 | 39 | 1.88 | 10 | 0 |
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| 1934 | 56.4 | 1 | 72.5 | 1 | 40.2 | 1 | 0.27 | 92 | 0 |
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| 1933 | 47.2 | 60 | 61.9 | 45 | 32.5 | 81 | 0.56 | 70 | 0 |
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| 1932 | 49.4 | 34 | 64 | 31 | 34.9 | 42 | 1.42 | 18 | 0 |
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| 1931 | 50.3 | 24 | 66 | 19 | 34.6 | 50 | 0.43 | 78 | 0 |
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| 1930 | 54.9 | 3 | 69.8 | 4 | 40 | 2 | 1.05 | 37 | 0 |
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| 1929 | 45.3 | 83 | 58 | 83 | 32.6 | 77 | 1.27 | 25 | 0 |
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| 1928 | 46 | 73 | 59.4 | 73 | 32.6 | 77 | 0.33 | 84 | 0 |
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| 1927 | 47.3 | 59 | 60.4 | 59 | 34.1 | 57 | 0.72 | 57 | 0 |
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| 1926 | 55 | 2 | 70.1 | 3 | 39.8 | 3 | 0.54 | 72 | 0 |
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| 1925 | 50 | 26 | 63.2 | 34 | 36.9 | 14 | 1.35 | 22 | 0 |
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| 1924 | 47.4 | 57 | 63.1 | 35 | 31.6 | 92 | 0.03 | 109 | 0 |
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| 1923 | 47.2 | 60 | 60.3 | 63 | 33.9 | 62 | 1.36 | 20 | 1 |
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| 1922 | 42.6 | 103 | 55.7 | 99 | 29.5 | 105 | 1.64 | 13 | 0 |
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| 1921 | 43.4 | 100 | 54.1 | 104 | 32.6 | 77 | 1.16 | 29 | 3 |
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| 1920 | 44.3 | 93 | 57 | 90 | 31.6 | 92 | 1.15 | 30 | 2 |
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| 1919 | 49.9 | 27 | 65.7 | 23 | 34.2 | 54 | 0.69 | 60 | 1 |
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| 1918 | 46.7 | 65 | 61.8 | 47 | 31.6 | 92 | 0.82 | 53 | 3 |
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| 1917 | 42.2 | 104 | 52.6 | 105 | 31.8 | 89 | 2.43 | 5 | 0 |
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| 1916 | 49.4 | 34 | 63.7 | 33 | 35.2 | 38 | 0.51 | 76 | 0 |
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