Boise May 31 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of May 31.
May 31 All-Time Records
1911–2023
Highest temperature 98 °F 1931
Lowest temperature 32 °F 1978
Lowest daily high 51 °F 1923
Highest daily low 64 °F 2009
Most precipitation 0.67 inches 1954
Most snow none -
May 31 Average Weather
1991–2020 1
Average high 76.3 °F
Average low 50.4 °F
Chance precipitation 24.3%
Chance snow 0%
Boise May 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 76 58 0.05 0.0
2022 66 45 0.00 0.0
2021 87 53 0.00 0.0
2020 78 58 0.09 0.0
2019 80 55 0.00 0.0
2018 69 53 0.00 0.0
2017 88 60 0.00 0.0
2016 81 47 0.00 0.0
2015 94 57 0.00 0.0
2014 82 48 0.00 0.0
2013 70 44 0.00 0.0
2012 84 52 0.00 0.0
2011 74 54 0.00 0.0
2010 66 55 0.01 0.0
2009 88 64 0.00 0.0
2008 78 51 0.01 0.0
2007 88 53 0.00 0.0
2006 82 52 0.00 0.0
2005 73 51 0.57 0.0
2004 72 45 0.00 0.0
2003 78 53 0.00 0.0
2002 88 55 0.00 0.0
2001 85 51 0.00 0.0
2000 64 37 0.00 0.0
1999 77 44 0.00 0.0
1998 69 43 0.00 0.0
1997 87 62 0.00 0.0
1996 72 42 0.00 0.0
1995 86 52 0.00 0.0
1994 70 53 0.00 0.0
1993 75 52 0.15 0.0
1992 85 48 0.00 0.0
1991 75 46 0.00 0.0
1990 53 39 0.30 0.0
1989 78 38 0.00 0.0
1988 68 38 0.00 0.0
1987 66 47 0.07 0.0
1986 97 62 0.00 0.0
1985 76 48 0.00 0.0
1984 60 40 0.00 0.0
1983 73 59 0.00 0.0
1982 79 47 0.00 0.0
1981 71 46 0.00 0.0
1980 72 47 0.00 0.0
1979 74 37 0.00 0.0
1978 70 32 0.00 0.0
1977 93 57 0.00 0.0
1976 70 48 0.17 0.0
1975 83 49 0.00 0.0
1974 75 42 0.00 0.0
1973 74 54 0.00 0.0
1972 93 63 0.00 0.0
1971 67 49 0.02 0.0
1970 77 39 0.00 0.0
1969 76 45 0.00 0.0
1968 79 45 0.00 0.0
1967 62 41 0.11 0.0
1966 66 43 0.14 0.0
1965 68 45 0.00 0.0
1964 79 52 0.00 0.0
1963 69 56 0.04 0.0
1962 76 46 0.00 0.0
1961 83 42 0.00 0.0
1960 80 49 0.00 0.0
1959 76 43 0.00 0.0
1958 70 50 0.35 0.0
1957 84 57 0.00 0.0
1956 90 61 0.00 0.0
1955 61 32 0.00 0.0
1954 68 43 0.67 0.0
1953 70 50 0.06 0.0
1952 79 53 0.00 0.0
1951 61 38 0.00 0.0
1950 76 38 0.00 0.0
1949 58 46 0.23 0.0
1948 76 52 0.00 0.0
1947 72 53 0.15 0.0
1946 80 50 0.00 0.0
1945 74 47 0.00 0.0
1944 71 50 0.16 0.0
1943 57 49 0.44 0.0
1942 67 42 0.28 0.0
1941 64 47 0.02 0.0
1940 81 57 0.00 0.0
1939 70 41 0.00 0.0
1938 75 43 0.00 0.0
1937 74 38 0.00 0.0
1936 72 53 0.15 0.0
1935 75 48 0.45 0.0
1934 76 43 0.00 n/a
1933 84 45 0.00 0.0
1932 67 46 0.00 n/a
1931 98 54 n/a n/a
1930 70 32 0.00 n/a
1929 79 58 0.00 0.0
1928 75 32 0.00 n/a
1927 66 36 0.01 0.0
1926 81 39 0.00 0.0
1925 67 43 0.03 0.0
1924 84 41 0.00 0.0
1923 51 42 0.42 0.0
1922 79 47 0.00 0.0
1921 71 47 0.00 0.0
1920 64 36 0.00 0.0
1919 64 32 0.00 0.0
1918 66 41 0.00 0.0
1917 70 36 0.00 0.0
1916 65 38 0.00 0.0
1915 77 57 0.08 0.0
1914 95 54 0.00 0.0
1913 87 55 0.00 0.0
1912 74 39 0.00 0.0
1911 85 56 0.00 0.0
What's the all-time high for Boise on 5/31?
For the date of May 31, the highest temperature ever reached in Boise history is 98 °F which happened in 1931.
Highest Temperatures in Boise on May 31
Rank Temperature Year
1 98 °F 1931
2 97 °F 1986
3 95 °F 1914
4 94 °F 2015
5 93 °F 1972
5 93 °F 1977
7 90 °F 1956
8 88 °F 2007
8 88 °F 2002
8 88 °F 2017
8 88 °F 2009
What's the all-time low for Boise on 5/31?
For the date of May 31, the lowest temperature ever reached in Boise history is 32 °F which has happened 5 times, most recently in 1978.
Lowest Temperatures in Boise on May 31
Rank Temperature Year
1 32 °F 1955
1 32 °F 1930
1 32 °F 1928
1 32 °F 1978
1 32 °F 1919
6 36 °F 1920
6 36 °F 1927
6 36 °F 1917
9 37 °F 2000
9 37 °F 1979
Lowest High Temperatures in Boise on May 31
Rank Temperature Year
1 51 °F 1923
2 53 °F 1990
3 57 °F 1943
4 58 °F 1949
5 60 °F 1984
6 61 °F 1955
6 61 °F 1951
8 62 °F 1967
9 64 °F 1941
9 64 °F 1920
9 64 °F 2000
9 64 °F 1919
What's the most it has ever rained in Boise on 5/31?
For the date of May 31, the most precipitation ever recorded in Boise history is 0.67 inches which happened in 1954.
All-Time Most Precipitation in Boise on May 31
Rank Precipitation Year
1 0.67 inches 1954
2 0.57 inches 2005
3 0.45 inches 1935
4 0.44 inches 1943
5 0.42 inches 1923
6 0.35 inches 1958
7 0.30 inches 1990
8 0.28 inches 1942
9 0.23 inches 1949
10 0.17 inches 1976
Weather Station Details
Years Station Coordinates
1940–2023 location
1911–1939 Meridian 1 W location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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