Casper December 31 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of December 31 (New Year's Eve).
December 31 All-Time Records
1900–2024
Highest temperature 54 °F 1980
Lowest temperature -35 °F 1923
Lowest daily high -14 °F 1923
Highest daily low 39 °F 1996
Most precipitation 0.38 inches 2011
Most snow 4.5 inches 1975
December 31 Average Weather
1991–2020 1
Average high 33.8 °F
Average low 14.2 °F
Chance precipitation 24.0%
Chance snow 22.6%
Casper December 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 46 10 0.00 0.0
2022 40 24 0.00 0.1
2021 16 -1 0.04 0.6
2020 32 19 0.00 0.0
2019 26 14 0.00 0.0
2018 17 -10 0.16 2.7
2017 5 -18 0.00 0.1
2016 34 8 0.01 0.5
2015 20 5 0.00 0.0
2014 8 -9 0.00 0.0
2013 38 30 0.08 0.8
2012 20 -11 0.00 0.0
2011 43 10 0.38 3.5
2010 2 -5 0.19 1.4
2009 25 -3 0.00 0.0
2008 47 7 0.00 0.0
2007 22 4 0.00 0.0
2006 30 4 0.00 0.0
2005 48 37 0.00 0.0
2004 45 17 0.00 0.0
2003 39 26 0.00 0.0
2002 38 23 0.00 0.0
2001 24 9 0.06 1.5
2000 33 13 0.00 0.0
1999 47 29 0.00 0.0
1998 44 15 0.00 0.0
1997 43 30 0.00 0.0
1996 48 39 0.00 n/a
1995 36 26 0.09 1.3
1994 14 -3 0.02 0.6
1993 40 27 0.00 0.0
1992 33 -8 0.00 0.0
1991 33 15 0.00 0.0
1990 34 17 0.00 0.0
1989 31 12 0.00 0.0
1988 34 17 0.00 0.0
1987 24 -7 0.00 0.0
1986 32 8 0.00 0.0
1985 32 14 0.00 0.0
1984 32 8 0.24 2.7
1983 37 20 0.04 0.7
1982 26 17 0.00 0.0
1981 23 -1 0.02 0.6
1980 54 22 0.01 0.0
1979 39 24 0.00 0.0
1978 -3 -34 0.00 0.0
1977 12 -8 0.09 2.3
1976 20 5 0.07 1.3
1975 22 6 0.15 4.5
1974 23 5 0.03 1.0
1973 5 -11 0.07 1.2
1972 26 12 0.00 0.0
1971 28 15 0.00 0.0
1970 39 22 0.04 1.2
1969 25 9 0.03 0.7
1968 33 -13 0.00 0.0
1967 25 -13 0.00 0.0
1966 29 16 0.00 0.0
1965 36 21 0.00 0.0
1964 34 19 0.00 0.0
1963 47 33 0.00 0.0
1962 42 27 0.00 0.0
1961 38 18 0.00 0.0
1960 35 11 0.05 0.5
1959 32 10 0.08 2.0
1958 36 18 0.00 0.0
1957 24 0 0.00 0.0
1956 45 24 0.00 0.0
1955 45 20 0.00 0.0
1954 43 26 0.00 0.0
1953 37 26 0.00 0.0
1952 37 27 0.00 0.5
1951 1 -12 0.05 2.6
1950 38 10 0.04 1.0
1949 45 28 0.00 0.0
1948 47 0 0.00 0.0
1947 n/a n/a n/a n/a
1946 n/a n/a n/a n/a
1945 n/a n/a n/a n/a
1944 n/a n/a n/a n/a
1943 n/a n/a n/a n/a
1942 n/a n/a n/a n/a
1941 n/a n/a n/a n/a
1940 n/a n/a n/a n/a
1939 n/a n/a n/a n/a
1938 42 32 0.00 0.0
1937 36 19 0.00 0.0
1936 15 5 0.00 0.0
1935 n/a 27 0.00 n/a
1934 51 15 0.04 0.5
1933 52 33 0.00 0.0
1932 39 20 0.00 0.0
1931 29 12 0.00 0.0
1930 40 5 n/a n/a
1929 50 25 0.08 1.0
1928 29 n/a 0.00 0.0
1927 n/a n/a n/a n/a
1926 53 37 n/a n/a
1925 39 7 n/a n/a
1924 21 10 0.11 1.5
1923 -14 -35 n/a n/a
1922 34 15 0.03 0.5
1921 31 13 0.00 n/a
1920 46 25 0.00 n/a
1919 n/a n/a n/a n/a
1918 n/a -21 0.06 1.0
1917 53 22 0.00 0.0
1916 n/a n/a n/a n/a
1915 21 10 0.00 0.0
1914 n/a 24 0.00 0.0
1913 40 21 0.00 0.0
1912 n/a n/a n/a n/a
1911 49 n/a 0.00 0.0
1910 31 22 0.00 0.0
1909 45 26 n/a 0.0
1908 n/a n/a n/a n/a
1907 n/a n/a n/a n/a
1906 n/a n/a n/a n/a
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 8 -7 0.00 0.0
What's the all-time high for Casper on 12/31?
For the date of Dec 31, the highest temperature ever reached in Casper history is 54 °F which happened in 1980.
Highest Temperatures in Casper on December 31
Rank Temperature Year
1 54 °F 1980
2 53 °F 1917
2 53 °F 1926
4 52 °F 1933
5 51 °F 1934
6 50 °F 1929
7 49 °F 1911
8 48 °F 2005
8 48 °F 1996
10 47 °F 1948
10 47 °F 2008
10 47 °F 1963
10 47 °F 1999
What's the all-time low for Casper on 12/31?
For the date of Dec 31, the lowest temperature ever reached in Casper history is -35 °F which happened in 1923.
Lowest Temperatures in Casper on December 31
Rank Temperature Year
1 -35 °F 1923
2 -34 °F 1978
3 -21 °F 1918
4 -18 °F 2017
5 -13 °F 1967
5 -13 °F 1968
7 -12 °F 1951
8 -11 °F 2012
8 -11 °F 1973
10 -10 °F 2018
Lowest High Temperatures in Casper on December 31
Rank Temperature Year
1 -14 °F 1923
2 -3 °F 1978
3 1 °F 1951
4 2 °F 2010
5 5 °F 2017
5 5 °F 1973
7 8 °F 2014
7 8 °F 1900
9 12 °F 1977
10 14 °F 1994
What's the most it has ever rained in Casper on 12/31?
For the date of Dec 31, the most precipitation ever recorded in Casper history is 0.38 inches which happened in 2011.
All-Time Most Precipitation in Casper on December 31
Rank Precipitation Year
1 0.38 inches 2011
2 0.24 inches 1984
3 0.19 inches 2010
4 0.16 inches 2018
5 0.15 inches 1975
6 0.11 inches 1924
7 0.09 inches 1977
7 0.09 inches 1995
9 0.08 inches 1929
9 0.08 inches 1959
9 0.08 inches 2013
All-Time Most Snow in Casper on December 31
Rank Precipitation Year
1 4.5 inches 1975
2 3.5 inches 2011
3 2.7 inches 2018
3 2.7 inches 1984
5 2.6 inches 1951
6 2.3 inches 1977
7 2.0 inches 1959
8 1.5 inches 2001
8 1.5 inches 1924
10 1.4 inches 2010
Weather Station Details
Years Station Coordinates
1949–2024 Casper-Natrona County International Airport location
1900–1948 Casper 2 E location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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