Boise October 21 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of October 21.
October 21 All-Time Records
1940–2022
Highest temperature 84 °F 2003
Lowest temperature 23 °F 1996
Lowest daily high 44 °F 1974
Highest daily low 52 °F 2021
Most precipitation 0.6 inches 1974
Most snow none -
October 21 Average Weather
1991–2020 1
Average high 62.2 °F
Average low 39.0 °F
Chance precipitation 20.6%
Chance snow 0.6%
Boise October 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 70 48 0.17 0.0
2021 76 52 0.00 0.0
2020 63 40 0.00 0.0
2019 56 40 0.00 0.0
2018 69 44 0.00 0.0
2017 50 33 0.16 0.0
2016 70 40 0.00 0.0
2015 66 43 0.00 0.0
2014 60 46 0.30 0.0
2013 67 39 0.00 0.0
2012 57 31 0.00 0.0
2011 67 45 0.00 0.0
2010 71 43 0.00 0.0
2009 57 43 0.00 0.0
2008 53 35 0.00 0.0
2007 54 37 0.00 0.0
2006 57 32 0.00 0.0
2005 66 41 0.00 0.0
2004 56 38 0.00 0.0
2003 84 52 0.00 0.0
2002 65 46 0.00 0.0
2001 65 38 0.00 0.0
2000 51 38 0.14 0.0
1999 71 40 0.00 0.0
1998 66 37 0.00 0.0
1997 65 39 0.00 0.0
1996 50 23 0.00 0.0
1995 55 34 0.00 0.0
1994 65 40 0.00 0.0
1993 64 39 0.00 0.0
1992 68 45 0.00 0.0
1991 76 44 0.00 0.0
1990 61 36 0.12 0.0
1989 67 51 0.29 0.0
1988 76 45 0.00 0.0
1987 66 34 0.00 0.0
1986 65 37 0.00 0.0
1985 71 34 0.06 0.0
1984 48 28 0.00 0.0
1983 74 47 0.00 0.0
1982 71 39 0.00 0.0
1981 55 31 0.00 0.0
1980 62 39 0.00 0.0
1979 53 42 0.13 0.0
1978 62 38 0.00 0.0
1977 63 35 0.00 0.0
1976 63 29 0.00 0.0
1975 66 46 0.49 0.0
1974 44 39 0.65 0.0
1973 72 47 0.00 0.0
1972 62 46 0.00 0.0
1971 55 30 0.00 0.0
1970 53 39 0.00 0.0
1969 66 40 0.00 0.0
1968 57 34 0.00 0.0
1967 68 44 0.04 0.0
1966 49 29 0.00 0.0
1965 65 37 0.00 0.0
1964 65 35 0.00 0.0
1963 64 50 0.00 0.0
1962 69 41 0.00 0.0
1961 45 31 0.00 0.0
1960 68 44 0.00 0.0
1959 57 34 0.00 0.0
1958 58 25 0.00 0.0
1957 63 34 0.00 0.0
1956 55 31 0.00 0.0
1955 66 46 0.01 0.0
1954 77 39 0.00 0.0
1953 52 32 0.00 0.0
1952 71 43 0.00 0.0
1951 48 33 0.00 0.0
1950 69 41 0.00 0.0
1949 56 26 0.00 0.0
1948 68 36 0.00 0.0
1947 54 35 0.13 0.0
1946 61 47 0.16 0.0
1945 58 24 0.01 0.0
1944 62 41 0.00 0.0
1943 50 36 0.22 0.0
1942 69 41 0.00 0.0
1941 63 44 0.00 0.0
1940 64 44 0.01 0.0
All-Time Highest Temperatures in Boise on October 21
Rank Temperature Year
1 84 °F 2003
2 77 °F 1954
3 76 °F 1991
3 76 °F 1988
3 76 °F 2021
6 74 °F 1983
7 72 °F 1973
8 71 °F 1952
8 71 °F 2010
8 71 °F 1999
8 71 °F 1982
8 71 °F 1985
All-Time Lowest Temperatures in Boise on October 21
Rank Temperature Year
1 23 °F 1996
2 24 °F 1945
3 25 °F 1958
4 26 °F 1949
5 28 °F 1984
6 29 °F 1966
6 29 °F 1976
8 30 °F 1971
9 31 °F 2012
9 31 °F 1956
9 31 °F 1961
9 31 °F 1981
Lowest High Temperatures in Boise on October 21
Rank Temperature Year
1 44 °F 1974
2 45 °F 1961
3 48 °F 1951
3 48 °F 1984
5 49 °F 1966
6 50 °F 1943
6 50 °F 2017
6 50 °F 1996
9 51 °F 2000
10 52 °F 1953
All-Time Most Precipitation in Boise on October 21
Rank Precipitation Year
1 0.6 inches 1974
2 0.5 inches 1975
3 0.3 inches 2014
4 0.3 inches 1989
5 0.2 inches 1943
6 0.2 inches 2022
7 0.2 inches 1946
7 0.2 inches 2017
9 0.1 inches 2000
10 0.1 inches 1979
10 0.1 inches 1947
Weather Station Details
Years Station Coordinates
1940–2022 location