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Boise July 21 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of July 21.
July 21 All-Time Records
1940–2022
Highest temperature 107 °F 2005
Lowest temperature 46 °F 1954
Lowest daily high 70 °F 1954
Highest daily low 73 °F 1977
Most precipitation 0.2 inches 1972
Most snow none -
July 21 Average Weather
1991–2020 1
Average high 93.5 °F
Average low 62.3 °F
Chance precipitation 7.2%
Chance snow 0%
Boise July 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 100 64 0.00 0.0
2021 95 68 0.01 0.0
2020 99 63 0.00 0.0
2019 97 57 0.00 0.0
2018 97 59 0.00 0.0
2017 94 58 0.00 0.0
2016 100 64 0.00 0.0
2015 95 66 0.02 0.0
2014 83 71 0.00 0.0
2013 99 62 0.00 0.0
2012 96 61 0.00 0.0
2011 88 58 0.00 0.0
2010 95 60 0.00 0.0
2009 99 65 0.00 0.0
2008 95 71 0.00 0.0
2007 97 64 0.00 0.0
2006 104 68 0.00 0.0
2005 107 68 0.00 0.0
2004 93 61 0.00 0.0
2003 101 65 0.00 0.0
2002 95 62 0.00 0.0
2001 86 55 0.00 0.0
2000 102 67 0.00 0.0
1999 90 54 0.00 0.0
1998 100 63 0.00 0.0
1997 101 68 0.00 0.0
1996 90 56 0.00 0.0
1995 90 63 0.00 0.0
1994 101 68 0.00 0.0
1993 78 54 0.03 0.0
1992 84 53 0.00 0.0
1991 93 60 0.00 0.0
1990 95 64 0.00 0.0
1989 91 63 0.02 0.0
1988 103 59 0.00 0.0
1987 86 54 0.11 0.0
1986 92 52 0.00 0.0
1985 97 58 0.00 0.0
1984 84 53 0.00 0.0
1983 90 53 0.00 0.0
1982 94 58 0.00 0.0
1981 90 50 0.00 0.0
1980 96 58 0.00 0.0
1979 88 72 0.00 0.0
1978 87 53 0.00 0.0
1977 100 73 0.00 0.0
1976 89 56 0.00 0.0
1975 95 63 0.01 0.0
1974 98 63 0.00 0.0
1973 80 58 0.00 0.0
1972 73 53 0.21 0.0
1971 96 63 0.00 0.0
1970 90 67 0.00 0.0
1969 97 55 0.00 0.0
1968 93 54 0.00 0.0
1967 91 56 0.00 0.0
1966 88 50 0.00 0.0
1965 81 51 0.00 0.0
1964 93 59 0.00 0.0
1963 99 64 0.00 0.0
1962 98 60 0.00 0.0
1961 93 62 0.00 0.0
1960 102 65 0.00 0.0
1959 101 71 0.00 0.0
1958 93 63 0.00 0.0
1957 91 63 0.00 0.0
1956 95 68 0.00 0.0
1955 102 67 0.08 0.0
1954 70 46 0.00 0.0
1953 86 47 0.00 0.0
1952 80 53 0.00 0.0
1951 84 54 0.00 0.0
1950 91 56 0.00 0.0
1949 90 54 0.00 0.0
1948 91 58 0.00 0.0
1947 96 64 0.00 0.0
1946 103 65 0.00 0.0
1945 97 64 0.00 0.0
1944 93 64 0.01 0.0
1943 86 69 0.00 0.0
1942 104 64 0.00 0.0
1941 97 62 0.00 0.0
1940 90 53 0.00 0.0
All-Time Highest Temperatures in Boise on July 21
Rank Temperature Year
1 107 °F 2005
2 104 °F 2006
2 104 °F 1942
4 103 °F 1988
4 103 °F 1946
6 102 °F 1960
6 102 °F 2000
6 102 °F 1955
9 101 °F 1959
9 101 °F 1994
9 101 °F 1997
9 101 °F 2003
All-Time Lowest Temperatures in Boise on July 21
Rank Temperature Year
1 46 °F 1954
2 47 °F 1953
3 50 °F 1966
3 50 °F 1981
5 51 °F 1965
6 52 °F 1986
7 53 °F 1940
7 53 °F 1952
7 53 °F 1983
7 53 °F 1978
7 53 °F 1972
7 53 °F 1992
7 53 °F 1984
Lowest High Temperatures in Boise on July 21
Rank Temperature Year
1 70 °F 1954
2 73 °F 1972
3 78 °F 1993
4 80 °F 1973
4 80 °F 1952
6 81 °F 1965
7 83 °F 2014
8 84 °F 1984
8 84 °F 1992
8 84 °F 1951
All-Time Most Precipitation in Boise on July 21
Rank Precipitation Year
1 0.2 inches 1972
2 0.1 inches 1987
3 0.1 inches 1955
4 0.0 inches 1993
5 0.0 inches 2015
5 0.0 inches 1989
7 0.0 inches 1944
7 0.0 inches 2021
7 0.0 inches 1975
Weather Station Details
Years Station Coordinates
1940–2022 location