Casper December 18 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of December 18.
December 18 All-Time Records
1900–2024
Highest temperature 62 °F 1931
Lowest temperature -32 °F 1924
Lowest daily high -10 °F 1924
Highest daily low 42 °F 1931
Most precipitation 0.19 inches 1961
Most snow 3.8 inches 1961
December 18 Average Weather
1991–2020 1
Average high 34.6 °F
Average low 14.7 °F
Chance precipitation 24.8%
Chance snow 24.1%
Casper December 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 50 16 0.00 0.0
2022 28 -5 0.00 0.0
2021 31 5 0.00 0.0
2020 31 16 0.17 2.1
2019 37 23 0.00 0.0
2018 47 30 0.00 0.0
2017 37 27 0.00 0.0
2016 16 2 0.00 0.0
2015 37 17 0.00 0.0
2014 29 17 0.00 0.0
2013 51 37 0.00 0.0
2012 31 12 0.00 0.0
2011 45 18 0.00 0.0
2010 28 -9 0.00 0.0
2009 37 12 0.00 0.0
2008 28 16 0.02 0.2
2007 37 21 0.00 0.0
2006 23 7 0.00 0.0
2005 10 -2 0.00 0.0
2004 45 22 0.00 0.0
2003 37 17 0.00 0.0
2002 30 9 0.16 2.0
2001 32 14 0.05 0.7
2000 26 15 0.00 0.0
1999 47 24 0.00 0.0
1998 29 -5 0.08 3.0
1997 36 27 0.05 1.0
1996 16 -16 0.00 n/a
1995 28 2 0.00 0.0
1994 52 35 0.00 0.0
1993 29 18 0.00 0.0
1992 27 -2 0.00 0.0
1991 45 14 0.00 0.0
1990 34 -5 0.08 0.8
1989 11 -6 0.00 0.0
1988 47 30 0.00 0.0
1987 41 12 0.00 0.0
1986 38 19 0.00 0.0
1985 35 25 0.00 0.0
1984 31 3 0.00 0.0
1983 5 -18 0.00 0.0
1982 33 18 0.00 0.0
1981 34 10 0.00 0.0
1980 43 11 0.03 0.3
1979 51 34 0.00 0.0
1978 42 34 0.00 0.0
1977 37 16 0.02 0.4
1976 50 26 0.00 0.0
1975 32 10 0.00 0.0
1974 31 14 0.00 0.0
1973 39 11 0.12 1.8
1972 44 29 0.00 0.0
1971 40 26 0.00 0.0
1970 20 -6 0.02 0.6
1969 47 15 0.00 0.0
1968 15 1 0.00 0.0
1967 25 10 0.00 0.0
1966 46 32 0.00 0.0
1965 24 12 0.00 0.0
1964 33 12 0.00 0.0
1963 40 5 0.00 0.0
1962 47 22 0.00 0.0
1961 25 -3 0.19 3.8
1960 44 18 0.00 0.0
1959 45 22 0.00 0.0
1958 50 33 0.00 0.0
1957 41 27 0.00 0.0
1956 42 29 0.00 0.0
1955 39 -2 0.00 0.3
1954 43 24 0.00 0.0
1953 44 29 0.00 0.0
1952 28 21 0.00 0.0
1951 36 1 0.00 0.0
1950 45 20 0.00 0.0
1949 39 25 0.00 0.0
1948 24 8 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 39 20 0.00 0.0
1937 34 21 0.01 0.1
1936 45 26 0.00 0.0
1935 36 7 0.00 n/a
1934 35 18 0.00 0.0
1933 45 18 0.00 0.0
1932 n/a n/a 0.00 0.0
1931 62 42 0.00 0.0
1930 26 2 n/a n/a
1929 17 4 n/a n/a
1928 28 21 n/a n/a
1927 n/a n/a n/a n/a
1926 42 35 n/a n/a
1925 44 39 n/a n/a
1924 -10 -32 n/a n/a
1923 50 33 n/a n/a
1922 37 24 n/a n/a
1921 31 13 0.05 0.5
1920 40 29 0.00 n/a
1919 n/a n/a n/a n/a
1918 39 17 0.00 0.0
1917 51 42 0.00 0.0
1916 n/a n/a n/a n/a
1915 21 10 0.00 0.0
1914 32 14 0.00 0.0
1913 35 24 0.00 0.0
1912 n/a n/a n/a n/a
1911 36 6 0.00 0.0
1910 45 21 0.00 0.0
1909 15 -5 0.00 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 46 28 0.00 0.0
What's the all-time high for Casper on 12/18?
For the date of Dec 18, the highest temperature ever reached in Casper history is 62 °F which happened in 1931.
Highest Temperatures in Casper on December 18
Rank Temperature Year
1 62 °F 1931
2 52 °F 1994
3 51 °F 1979
3 51 °F 2013
3 51 °F 1917
6 50 °F 1923
6 50 °F 1958
6 50 °F 1976
6 50 °F 2023
10 47 °F 1962
10 47 °F 1969
10 47 °F 1988
10 47 °F 1999
10 47 °F 2018
What's the all-time low for Casper on 12/18?
For the date of Dec 18, the lowest temperature ever reached in Casper history is -32 °F which happened in 1924.
Lowest Temperatures in Casper on December 18
Rank Temperature Year
1 -32 °F 1924
2 -18 °F 1983
3 -16 °F 1996
4 -9 °F 2010
5 -6 °F 1989
5 -6 °F 1970
7 -5 °F 2022
7 -5 °F 1998
7 -5 °F 1990
7 -5 °F 1909
Lowest High Temperatures in Casper on December 18
Rank Temperature Year
1 -10 °F 1924
2 5 °F 1983
3 10 °F 2005
4 11 °F 1989
5 15 °F 1968
5 15 °F 1909
7 16 °F 1996
7 16 °F 2016
9 17 °F 1929
10 20 °F 1970
What's the most it has ever rained in Casper on 12/18?
For the date of Dec 18, the most precipitation ever recorded in Casper history is 0.19 inches which happened in 1961.
All-Time Most Precipitation in Casper on December 18
Rank Precipitation Year
1 0.19 inches 1961
2 0.17 inches 2020
3 0.16 inches 2002
4 0.12 inches 1973
5 0.08 inches 1998
5 0.08 inches 1990
7 0.05 inches 1921
7 0.05 inches 2001
7 0.05 inches 1997
10 0.03 inches 1980
All-Time Most Snow in Casper on December 18
Rank Precipitation Year
1 3.8 inches 1961
2 3.0 inches 1998
3 2.1 inches 2020
4 2.0 inches 2002
5 1.8 inches 1973
6 1.0 inches 1997
7 0.8 inches 1990
8 0.7 inches 2001
9 0.6 inches 1970
10 0.5 inches 1921
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy