Every April in Challis, ID from 1895 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 | 44.3 | 45 | 57.9 | 50 | 30.7 | 46 | 0.74 | 28 | 0 |
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| 2025 | 44.8 | 43 | 60.1 | 32 | 29.6 | 60 | 0.16 | 92 | 0 |
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| 2024 | 45.7 | 31 | 59.5 | 39 | 31.9 | 25 | 1.04 | 11 | 0 |
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| 2023 | 41.3 | 84 | 54.5 | 82 | 28 | 84 | 0.22 | 87 | 0 |
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| 2022 | 39 | 95 | 52 | 93 | 26 | 99 | 0.69 | 35 | 0 |
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| 2021 | 44.3 | 45 | 59.8 | 35 | 28.7 | 78 | 0.02 | 107 | 0 |
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| 2020 | | | | | | | | | 23 |
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| 2019 | 47.8 | 11 | 59.6 | 36 | 35.9 | 2 | 0.43 | 65 | 0 |
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| 2018 | 46.5 | 20 | 60.7 | 28 | 32.3 | 22 | 0.45 | 61 | 0 |
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| 2017 | 42.1 | 73 | 54.4 | 83 | 29.7 | 58 | 0.45 | 61 | 0 |
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| 2016 | 48.4 | 9 | 63.6 | 13 | 33.2 | 10 | 0.63 | 42 | 0 |
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| 2015 | 43.9 | 49 | 58.8 | 45 | 29 | 72 | 0.47 | 59 | 0 |
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| 2014 | 43.6 | 56 | 57.6 | 53 | 29.6 | 60 | 0.96 | 17 | 0 |
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| 2013 | 42 | 77 | 56.2 | 65 | 27.9 | 88 | 0.03 | 106 | 0 |
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| 2012 | 45.3 | 34 | 60.8 | 26 | 29.7 | 58 | 0.58 | 44 | 0 |
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| 2011 | 37.2 | 99 | 49.7 | 103 | 24.6 | 105 | 0.49 | 55 | 0 |
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| 2010 | 42.5 | 67 | 55.9 | 69 | 29.1 | 71 | 0.55 | 49 | 0 |
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| 2009 | 42.6 | 66 | 55.3 | 74 | 29.9 | 54 | 0.36 | 72 | 0 |
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| 2008 | 37.9 | 97 | 53.3 | 90 | 22.6 | 107 | 0.14 | 101 | 0 |
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| 2007 | 45.4 | 33 | 59.6 | 36 | 31.1 | 38 | 0.29 | 79 | 0 |
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| 2006 | 44.9 | 40 | 57.8 | 51 | 32.1 | 23 | 1.25 | 6 | 1 |
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| 2005 | 43.7 | 54 | 57.5 | 56 | 29.8 | 57 | 0.24 | 86 | 0 |
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| 2004 | 46.5 | 20 | 61.2 | 25 | 31.7 | 27 | 0.29 | 79 | 0 |
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| 2003 | 42.5 | 67 | 55 | 79 | 29.9 | 54 | 0.77 | 25 | 0 |
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| 2002 | 43 | 62 | 56.5 | 63 | 29.4 | 66 | 0.89 | 21 | 0 |
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| 2001 | 41.6 | 80 | 54.3 | 84 | 29 | 72 | 1.22 | 7 | 0 |
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| 2000 | 47.5 | 14 | 62 | 17 | 33 | 12 | 0.29 | 79 | 0 |
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| 1999 | 41.5 | 82 | 55.1 | 77 | 28 | 84 | 0.28 | 83 | 0 |
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| 1996 | | | | | 32.6 | 17 | 0.50 | 53 | 8 |
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| 1995 | | | | | 32 | 24 | 1.19 | 8 | 6 |
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| 1994 | | | | | 34.7 | 5 | 0.98 | 16 | 6 |
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| 1993 | 42.5 | 67 | 54.2 | 85 | 31 | 40 | 0.77 | 25 | 1 |
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| 1992 | | | | | 35.7 | 3 | 0.41 | 68 | 6 |
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| 1991 | 43.2 | 60 | 54.7 | 81 | 31.6 | 30 | 0.74 | 28 | 0 |
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| 1990 | 50 | 3 | 64 | 12 | 36 | 1 | 0.66 | 38 | 0 |
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| 1989 | 47 | 17 | 61.4 | 22 | 32.6 | 17 | 0.16 | 92 | 0 |
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| 1988 | | | | | | | 0.58 | 44 | 4 |
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| 1987 | 49.9 | 4 | 67 | 4 | 32.7 | 15 | 0.15 | 95 | 0 |
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| 1986 | 44.9 | 40 | 57.1 | 60 | 32.7 | 15 | 0.39 | 71 | 0 |
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| 1985 | 47.8 | 11 | 61.7 | 20 | 33.9 | 6 | 0.19 | 88 | 0 |
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| 1984 | 40.8 | 86 | 52 | 93 | 29.6 | 60 | 0.34 | 74 | 0 |
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| 1983 | | | 51.9 | 96 | | | 0.28 | 83 | 4 |
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| 1982 | | | 51 | 98 | 24.9 | 103 | 0.67 | 36 | 4 |
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| 1981 | 45 | 37 | 57.5 | 56 | 32.5 | 20 | 0.99 | 15 | 0 |
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| 1980 | 46.9 | 18 | 60.8 | 26 | 33 | 12 | 0.62 | 43 | 0 |
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| 1979 | 42.8 | 64 | 55.1 | 77 | 30.5 | 48 | 0.72 | 31 | 0 |
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| 1978 | 44.5 | 44 | 55.8 | 70 | 33.1 | 11 | 1.07 | 10 | 0 |
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| 1977 | 48.8 | 6 | 64.9 | 7 | 32.6 | 17 | 0.02 | 107 | 0 |
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| 1976 | 41.9 | 78 | 52.8 | 91 | 31 | 40 | 1.04 | 11 | 0 |
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| 1975 | 36.8 | 100 | 48.2 | 104 | 25.5 | 102 | 1.00 | 14 | 0 |
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| 1974 | 44.9 | 40 | 58.1 | 49 | 31.7 | 27 | trace | 109 | 0 |
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| 1973 | 42.1 | 73 | 54.1 | 86 | 30.1 | 52 | 1.42 | 4 | 0 |
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| 1972 | 42.1 | 73 | 56.1 | 68 | 28 | 84 | 0.12 | 103 | 0 |
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| 1971 | 42.2 | 72 | 55.2 | 75 | 29.2 | 70 | 0.66 | 38 | 0 |
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| 1970 | 39.4 | 92 | 51 | 98 | 27.7 | 91 | 0.15 | 95 | 0 |
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| 1969 | 47.8 | 11 | 62.2 | 16 | 33.3 | 8 | 0.15 | 95 | 0 |
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| 1968 | 43.8 | 52 | 57.1 | 60 | 30.5 | 48 | 0.48 | 56 | 0 |
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| 1967 | 40.4 | 88 | 50.8 | 101 | 29.9 | 54 | 1.70 | 1 | 0 |
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| 1966 | 46.3 | 23 | 62 | 17 | 30.5 | 48 | 0.10 | 104 | 0 |
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| 1965 | 46.1 | 26 | 58.8 | 45 | 33.3 | 8 | 0.30 | 78 | 0 |
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| 1963 | 41.9 | 78 | 54.8 | 80 | 28.9 | 75 | 0.96 | 17 | 0 |
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| 1962 | 48.1 | 10 | 64.2 | 10 | 31.9 | 25 | 0.15 | 95 | 0 |
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| 1961 | 43.7 | 54 | 56.8 | 62 | 30.5 | 48 | 0.32 | 76 | 0 |
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| 1960 | 46 | 29 | 59.3 | 41 | 32.9 | 14 | 0.94 | 19 | 1 |
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| 1959 | 45 | 37 | 60.6 | 29 | 29.4 | 66 | trace | 109 | 0 |
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| 1958 | 40.9 | 85 | 53.5 | 89 | 28.9 | 75 | 0.72 | 31 | 3 |
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| 1957 | 43.4 | 58 | 57.6 | 53 | 29.3 | 69 | 0.29 | 79 | 1 |
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| 1956 | 45.1 | 35 | 59.6 | 36 | 30.6 | 47 | 0.48 | 56 | 0 |
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| 1955 | 39.4 | 92 | 52 | 93 | 26.8 | 94 | 0.71 | 33 | 0 |
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| 1954 | 46.1 | 26 | 60.6 | 29 | 31.6 | 30 | 0.15 | 95 | 0 |
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| 1953 | 42.1 | 73 | 55.6 | 71 | 28.6 | 80 | 1.10 | 9 | 0 |
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| 1952 | 46.6 | 19 | 62.3 | 15 | 31 | 40 | 0.45 | 61 | 1 |
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| 1951 | 46.3 | 23 | 61.3 | 23 | 31.3 | 35 | 0.43 | 65 | 0 |
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| 1950 | 42.7 | 65 | 57.4 | 58 | 28.1 | 83 | 0.17 | 91 | 0 |
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| 1949 | | | | | | | | | 7 |
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| 1948 | 42.5 | 67 | 55.4 | 72 | 29.6 | 60 | 0.54 | 50 | 0 |
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| 1947 | 43.9 | 49 | 58.3 | 47 | 29.4 | 66 | 0.36 | 72 | 0 |
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| 1946 | 47.2 | 15 | 63.5 | 14 | 30.9 | 43 | 0.16 | 92 | 0 |
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| 1945 | | | | | 24.7 | 104 | trace | 109 | 5 |
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| 1944 | 43.9 | 49 | 56.2 | 65 | 31.7 | 27 | 1.51 | 2 | 0 |
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| 1943 | | | | | | | | | 10 |
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| 1942 | 45.7 | 31 | 60 | 33 | 31.4 | 33 | 0.77 | 25 | 0 |
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| 1941 | 43.6 | 56 | 57.7 | 52 | 29.6 | 60 | 0.90 | 20 | 0 |
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| 1940 | 45.9 | 30 | 60.4 | 31 | 31.3 | 35 | 1.26 | 5 | 0 |
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| 1939 | 48.8 | 6 | 66.6 | 6 | 31.4 | 33 | 0.50 | 53 | 2 |
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| 1938 | 46.5 | 20 | 61.5 | 21 | 31.5 | 32 | 0.65 | 40 | 0 |
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| 1937 | 40.4 | 88 | 55.2 | 75 | 25.6 | 101 | 0.19 | 88 | 0 |
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| 1936 | 46.1 | 26 | 61.3 | 23 | 30.9 | 43 | 0.85 | 22 | 0 |
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| 1935 | 44 | 47 | 58.9 | 43 | 29 | 72 | 0.18 | 90 | 0 |
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| 1934 | | | | | | | | | 9 |
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| 1933 | | | 61.9 | 19 | | | 0.48 | 56 | 7 |
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| 1932 | 42.9 | 63 | 57.3 | 59 | 28.5 | 82 | 0.33 | 75 | 2 |
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| 1931 | 43.1 | 61 | 59 | 42 | 27.2 | 93 | 0.65 | 40 | 3 |
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| 1930 | 48.8 | 6 | 66.7 | 5 | 30.9 | 43 | 0.83 | 23 | 0 |
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| 1929 | 40.7 | 87 | 54.1 | 86 | 27.3 | 92 | 0.43 | 65 | 2 |
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| 1928 | | | | | 27.9 | 88 | 0.15 | 95 | 6 |
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| 1927 | 44 | 47 | 59.5 | 39 | 28.7 | 78 | 0.71 | 33 | 1 |
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| 1926 | 51.4 | 1 | 69.3 | 2 | 33.5 | 7 | 0.45 | 61 | 0 |
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| 1925 | 46.2 | 25 | 59.9 | 34 | 32.4 | 21 | 0.56 | 47 | 0 |
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| 1924 | 41.4 | 83 | 56.2 | 65 | 26.5 | 96 | 0.10 | 104 | 1 |
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| 1923 | 41.6 | 80 | 55.4 | 72 | 27.8 | 90 | 0.27 | 85 | 0 |
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| 1922 | 37.7 | 98 | 50.9 | 100 | 24.4 | 106 | 1.51 | 2 | 0 |
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| 1921 | 39.1 | 94 | 51.4 | 97 | 26.7 | 95 | 1.01 | 13 | 0 |
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| 1920 | 38.5 | 96 | 50.6 | 102 | 26.5 | 96 | 0.47 | 59 | 0 |
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| 1919 | 45 | 37 | 58.9 | 43 | 31.1 | 38 | 0.56 | 47 | 0 |
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| 1918 | 39.7 | 91 | 53.7 | 88 | 25.7 | 100 | 0.13 | 102 | 0 |
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| 1917 | 39.9 | 90 | 52.1 | 92 | 28 | 84 | 0.40 | 69 | 1 |
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| 1916 | 43.8 | 52 | 57.6 | 53 | 30 | 53 | 0.67 | 36 | 0 |
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| 1915 | | | 68.5 | 3 | | | 0.52 | 52 | 30 |
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| 1914 | 43.4 | 58 | 58.3 | 47 | 28.8 | 77 | 0.57 | 46 | 1 |
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| 1900 | 49.7 | 5 | 64.4 | 9 | 35 | 4 | 0.53 | 51 | 0 |
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| 1899 | 47.1 | 16 | 64.5 | 8 | 29.6 | 60 | 0.31 | 77 | 0 |
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| 1898 | 50.7 | 2 | 70 | 1 | 31.3 | 35 | 0.73 | 30 | 0 |
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| 1896 | 42.5 | 67 | 56.5 | 63 | 28.6 | 80 | 0.81 | 24 | 0 |
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| 1895 | 45.1 | 35 | 64.1 | 11 | 26.1 | 98 | 0.40 | 69 | 0 |
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