Average Temperature in Idaho by Year

This page is a list of the average statewide temperature in the U.S. state of Idaho for each year from 1895–2023. It is a statewide average over the entire territory of the state, based on data from the NOAA.
State:
Month:
What Was the Hottest Year in Idaho History?
1934 was the warmest year in Idaho history. Statewide, the average daily high temperature was 59.5 °F, and the average low was 34.4 °F.
What Was the Coldest Year in Idaho History?
1985 was the coolest year in Idaho history. Statewide, the average daily high temperature was 51.7 °F, and the average low was 27.7 °F.
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Year Rank High (°F) Low (°F)
2023 28 55.5 32.5
2022 41 55.5 31.4
2021 3 57.4 33.5
2020 14 56.5 32.2
2019 56 54.4 31.6
2018 11 56.2 32.8
2017 14 55.8 32.7
2016 5 56.8 33.4
2015 2 58.3 34.4
2014 5 56.8 33.4
2013 31 55.8 31.7
2012 5 57.3 32.9
2011 79 54.0 30.8
2010 44 54.7 31.9
2009 63 54.6 31.0
2008 75 54.7 30.3
2007 10 57.1 32.4
2006 19 56.3 32.1
2005 32 55.5 31.6
2004 19 55.6 32.6
2003 3 57.3 33.4
2002 56 55.0 31.0
2001 19 56.5 32.0
2000 30 55.8 32.1
1999 32 55.7 31.4
1998 14 55.5 33.2
1997 47 54.7 31.7
1996 47 54.8 31.5
1995 32 54.9 32.4
1994 14 56.4 32.2
1993 120 52.2 29.6
1992 8 57.1 32.8
1991 44 54.9 31.6
1990 38 55.5 31.4
1989 63 54.5 31.0
1988 19 56.5 31.8
1987 11 57.1 31.9
1986 25 55.7 32.5
1985 129 51.7 27.7
1984 122 51.6 29.9
1983 61 53.5 32.2
1982 117 51.9 30.2
1981 14 56.0 32.7
1980 44 54.4 32.0
1979 79 54.6 30.1
1978 79 53.7 31.0
1977 56 54.8 31.2
1976 90 54.3 29.9
1975 115 52.0 30.4
1974 56 55.0 31.0
1973 63 54.3 31.2
1972 90 53.4 30.8
1971 104 52.9 30.5
1970 75 53.8 31.2
1969 63 54.8 30.7
1968 84 53.7 31.0
1967 32 55.1 32.0
1966 38 55.8 31.2
1965 75 53.9 31.0
1964 126 52.2 29.0
1963 38 55.0 32.0
1962 79 54.3 30.5
1961 32 55.2 31.9
1960 84 54.4 30.1
1959 71 54.5 30.8
1958 11 56.4 32.6
1957 90 53.8 30.3
1956 94 54.0 29.9
1955 127 51.9 28.7
1954 47 55.5 30.9
1953 19 56.2 32.2
1952 100 54.6 29.0
1951 112 53.0 29.6
1950 84 53.6 30.8
1949 104 54.4 29.0
1948 112 53.1 29.7
1947 47 54.9 31.5
1946 63 54.4 31.2
1945 79 53.8 30.9
1944 104 53.8 29.6
1943 71 54.8 30.3
1942 108 53.7 29.6
1941 32 54.8 32.5
1940 9 56.6 33.2
1939 25 56.8 31.3
1938 41 54.7 32.1
1937 94 54.2 29.8
1936 61 55.5 30.3
1935 100 54.0 29.5
1934 1 59.5 34.4
1933 75 54.9 30.1
1932 120 52.8 28.9
1931 71 55.2 30.1
1930 108 53.6 29.5
1929 122 53.4 28.2
1928 84 54.4 30.3
1927 88 53.1 31.3
1926 19 56.2 32.1
1925 25 55.3 32.9
1924 100 54.2 29.4
1923 97 53.4 30.3
1922 122 52.8 28.7
1921 47 54.9 31.5
1920 100 52.7 30.8
1919 97 54.1 29.6
1918 54 54.7 31.5
1917 110 53.3 29.7
1916 128 52.0 28.3
1915 54 54.8 31.4
1914 63 54.8 30.8
1913 117 52.3 29.8
1912 117 51.8 30.2
1911 122 52.4 29.1
1910 41 55.6 31.1
1909 90 53.3 31.0
1908 94 53.4 30.7
1907 70 54.0 31.4
1906 56 54.4 31.5
1905 88 54.2 30.1
1904 47 55.3 31.2
1903 116 52.9 29.3
1902 97 53.8 30.1
1901 47 54.9 31.5
1900 28 56.0 32.0
1899 110 53.0 30.1
1898 104 54.3 29.1
1897 71 54.2 30.9
1896 63 54.0 31.6
1895 112 53.8 29.0