Boise December 20 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of December 20.
December 20 All-Time Records
1911–2023
Highest temperature 57 °F 1964
Lowest temperature -8 °F 1990
Lowest daily high 9 °F 1990
Highest daily low 43 °F 1955
Most precipitation 0.7 inches 2014
Most snow 9.8 inches 1996
December 20 Average Weather
1991–2020 1
Average high 38.1 °F
Average low 24.6 °F
Chance precipitation 38.9%
Chance snow 17.7%
Boise December 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 38 18 0.00 0.0
2021 50 30 0.00 0.0
2020 46 39 0.03 0.0
2019 50 40 0.00 0.0
2018 51 31 0.00 0.0
2017 51 28 0.11 0.3
2016 26 15 0.03 0.1
2015 40 26 0.04 0.2
2014 44 36 0.71 0.0
2013 31 11 0.20 2.3
2012 45 33 0.00 0.0
2011 44 21 0.00 0.0
2010 42 30 0.00 0.0
2009 43 30 0.01 0.0
2008 28 15 0.00 0.0
2007 43 29 0.05 0.0
2006 35 12 0.00 0.0
2005 35 29 0.00 0.0
2004 35 26 0.00 0.0
2003 43 30 0.06 0.0
2002 43 33 0.00 0.0
2001 46 30 0.02 0.0
2000 36 19 0.01 0.4
1999 45 28 0.00 0.0
1998 18 4 0.00 0.0
1997 39 23 0.00 0.0
1996 31 23 0.71 9.8
1995 31 20 0.00 0.0
1994 42 25 0.00 0.0
1993 33 17 0.00 0.0
1992 33 23 0.01 0.1
1991 38 18 0.00 0.0
1990 9 -8 0.07 1.1
1989 36 16 0.00 0.0
1988 40 20 0.03 0.0
1987 36 17 0.00 0.0
1986 26 24 0.00 0.0
1985 12 -1 0.00 0.0
1984 10 -5 0.08 1.5
1983 16 -6 0.00 0.0
1982 52 33 0.19 0.0
1981 49 37 0.12 0.0
1980 32 27 0.00 0.0
1979 50 34 0.06 0.0
1978 37 16 0.00 0.0
1977 32 21 0.00 0.0
1976 36 8 0.00 0.0
1975 23 14 0.00 0.0
1974 47 36 0.57 0.0
1973 46 32 0.15 0.0
1972 52 35 0.01 0.0
1971 41 16 0.00 0.0
1970 33 20 0.00 0.0
1969 47 38 0.15 0.0
1968 21 6 0.00 0.0
1967 25 10 0.01 0.3
1966 30 25 0.00 0.0
1965 28 13 0.00 0.0
1964 57 38 0.00 0.0
1963 41 29 0.11 1.0
1962 38 34 0.02 0.0
1961 51 35 0.06 0.0
1960 41 23 0.00 0.0
1959 40 18 0.00 0.0
1958 47 28 0.00 0.0
1957 47 38 0.00 0.0
1956 41 23 0.00 0.0
1955 53 43 0.02 0.0
1954 27 12 0.00 0.0
1953 49 34 0.04 0.0
1952 43 30 0.06 0.0
1951 31 19 0.00 0.0
1950 38 28 0.00 0.0
1949 25 -1 0.00 0.0
1948 39 15 0.04 0.0
1947 45 30 0.00 0.0
1946 45 21 0.00 0.0
1945 21 3 0.00 0.0
1944 32 29 0.26 0.0
1943 35 31 0.00 0.0
1942 35 22 0.02 0.0
1941 52 35 0.11 0.0
1940 55 41 0.00 0.0
1939 46 31 0.15 0.0
1938 38 20 0.00 0.0
1937 41 25 0.00 0.0
1936 41 22 0.00 0.0
1935 21 13 0.00 0.0
1934 45 33 0.14 n/a
1932 43 30 0.01 0.0
1931 39 15 0.00 0.0
1930 38 16 0.00 0.0
1929 40 10 0.00 0.0
1928 30 -2 0.00 0.0
1927 31 12 0.00 0.0
1926 38 15 0.00 0.0
1925 37 24 0.00 0.0
1924 11 -3 0.12 2.0
1923 37 16 0.00 0.0
1922 34 10 0.00 0.0
1921 37 23 0.16 1.5
1920 35 31 0.12 0.5
1919 35 23 0.01 0.0
1918 33 25 0.15 2.0
1917 54 33 0.08 0.0
1916 36 28 0.04 0.5
1915 39 26 0.04 0.0
1914 24 -1 0.00 0.0
1913 28 4 0.00 0.0
1912 32 17 0.05 0.7
1911 28 16 0.01 0.1
All-Time Highest Temperatures in Boise on December 20
Rank Temperature Year
1 57 °F 1964
2 55 °F 1940
3 54 °F 1917
4 53 °F 1955
5 52 °F 1941
5 52 °F 1982
5 52 °F 1972
8 51 °F 2018
8 51 °F 2017
8 51 °F 1961
All-Time Lowest Temperatures in Boise on December 20
Rank Temperature Year
1 -8 °F 1990
2 -6 °F 1983
3 -5 °F 1984
4 -3 °F 1924
5 -2 °F 1928
6 -1 °F 1985
6 -1 °F 1949
6 -1 °F 1914
9 3 °F 1945
10 4 °F 1998
10 4 °F 1913
Lowest High Temperatures in Boise on December 20
Rank Temperature Year
1 9 °F 1990
2 10 °F 1984
3 11 °F 1924
4 12 °F 1985
5 16 °F 1983
6 18 °F 1998
7 21 °F 1945
7 21 °F 1935
7 21 °F 1968
10 23 °F 1975
All-Time Most Precipitation in Boise on December 20
Rank Precipitation Year
1 0.7 inches 2014
1 0.7 inches 1996
3 0.6 inches 1974
4 0.3 inches 1944
5 0.2 inches 2013
6 0.2 inches 1982
7 0.2 inches 1921
8 0.1 inches 1969
8 0.1 inches 1973
8 0.1 inches 1939
8 0.1 inches 1918
All-Time Most Snow in Boise on December 20
Rank Precipitation Year
1 9.8 inches 1996
2 2.3 inches 2013
3 2.0 inches 1918
3 2.0 inches 1924
5 1.5 inches 1921
5 1.5 inches 1984
7 1.1 inches 1990
8 1.0 inches 1963
9 0.7 inches 1912
10 0.5 inches 1920
10 0.5 inches 1916
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.
© H Brothers Inc, 2021–2023
Contact us | Privacy policy