Idaho Falls December 21 Weather Records

Daily averages and all-time records for weather in Idaho Falls, Idaho for the date of December 21.
December 21 All-Time Records
1948–2023
Highest temperature 50 °F 1969
Lowest temperature -24 °F 1983
Lowest daily high -7 °F 1983
Highest daily low 35 °F 1969
Most precipitation 0.2 inches 1988
December 21 Average Weather
1991–2020 1
Average high 29.3 °F
Average low 12.5 °F
Chance precipitation 30.8%
Idaho Falls December 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 35 -1 0.08 n/a
2021 35 20 0.00 n/a
2020 48 28 0.00 n/a
2019 30 15 0.00 n/a
2018 37 19 0.00 n/a
2017 22 -2 0.00 n/a
2016 24 8 0.00 n/a
2015 35 25 0.04 n/a
2014 45 32 0.04 n/a
2012 38 10 0.00 n/a
2011 31 13 0.00 n/a
2010 25 8 0.00 n/a
2009 38 28 0.00 n/a
2008 23 -1 0.10 n/a
2007 27 7 0.00 n/a
2006 31 3 0.01 n/a
2005 35 26 0.00 n/a
2004 24 6 0.00 n/a
2003 34 29 0.00 n/a
2002 29 22 0.06 n/a
2001 27 9 0.00 n/a
2000 26 4 0.00 n/a
1999 33 10 0.00 n/a
1998 3 -21 0.00 n/a
1993 29 12 0.01 0.1
1992 31 25 0.00 0.0
1991 28 4 0.00 0.0
1990 -6 -18 0.00 0.0
1989 35 6 0.00 0.0
1988 35 22 0.22 2.7
1987 36 20 0.00 0.0
1986 35 11 0.00 0.0
1985 14 -4 0.00 0.0
1984 22 8 0.14 3.1
1983 -7 -24 0.00 0.0
1982 39 33 0.10 0.0
1981 35 30 0.01 0.0
1980 40 26 0.00 0.0
1979 35 23 0.05 0.5
1978 29 -10 0.00 0.0
1977 16 -5 0.00 0.0
1976 29 1 0.00 0.0
1975 37 14 0.00 0.0
1974 41 19 0.00 0.0
1973 31 20 0.00 0.0
1972 42 33 0.02 0.0
1971 37 13 0.00 0.0
1970 26 14 0.05 0.5
1969 50 35 0.05 0.0
1968 12 -5 0.01 0.0
1967 14 -3 0.02 1.0
1966 29 4 0.01 0.0
1965 29 1 0.00 0.0
1964 43 34 0.10 0.0
1963 29 12 0.18 6.2
1962 36 28 0.00 0.0
1961 43 21 0.16 0.0
1960 33 14 0.00 0.0
1959 38 10 0.00 0.0
1958 47 28 0.00 0.0
1957 45 31 0.00 0.0
1956 27 10 0.02 1.4
1955 49 34 0.00 0.0
1954 29 5 0.00 0.0
1953 34 18 0.00 0.0
1952 32 20 0.00 0.0
1951 27 2 0.01 0.2
1950 44 25 0.00 0.0
1949 20 -5 0.01 0.1
1948 18 4 0.00 0.0
All-Time Highest Temperatures in Idaho Falls on December 21
Rank Temperature Year
1 50 °F 1969
2 49 °F 1955
3 48 °F 2020
4 47 °F 1958
5 45 °F 2014
5 45 °F 1957
7 44 °F 1950
8 43 °F 1964
8 43 °F 1961
10 42 °F 1972
All-Time Lowest Temperatures in Idaho Falls on December 21
Rank Temperature Year
1 -24 °F 1983
2 -21 °F 1998
3 -18 °F 1990
4 -10 °F 1978
5 -5 °F 1949
5 -5 °F 1977
5 -5 °F 1968
8 -4 °F 1985
9 -3 °F 1967
10 -2 °F 2017
Lowest High Temperatures in Idaho Falls on December 21
Rank Temperature Year
1 -7 °F 1983
2 -6 °F 1990
3 3 °F 1998
4 12 °F 1968
5 14 °F 1985
5 14 °F 1967
7 16 °F 1977
8 18 °F 1948
9 20 °F 1949
10 22 °F 1984
All-Time Most Precipitation in Idaho Falls on December 21
Rank Precipitation Year
1 0.2 inches 1988
2 0.2 inches 1963
3 0.2 inches 1961
4 0.1 inches 1984
5 0.1 inches 2008
5 0.1 inches 1964
5 0.1 inches 1982
8 0.1 inches 2022
9 0.1 inches 2002
10 0.1 inches 1969
10 0.1 inches 1970
10 0.1 inches 1979
Weather Station Details
Years Station Coordinates
1948–2023 Idaho Falls Fanning Field location