Casper March 21 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of March 21.
March 21 All-Time Records
1900–2024
Highest temperature 72 °F 2009
Lowest temperature -9 °F 1912
Lowest daily high 17 °F 2002
Highest daily low 44 °F 1995
Most precipitation 0.28 inches 2013
Most snow 3.4 inches 2013
March 21 Average Weather
1991–2020 1
Average high 51.0 °F
Average low 24.5 °F
Chance precipitation 28.7%
Chance snow 21.4%
Casper March 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 61 31 0.00 0.0
2023 43 17 0.00 0.0
2022 37 21 0.04 0.2
2021 39 17 0.24 3.0
2020 53 28 0.00 0.0
2019 56 20 0.00 0.0
2018 56 23 0.00 0.0
2017 54 36 0.00 0.0
2016 67 40 0.00 0.0
2015 71 25 0.00 0.0
2014 38 24 0.00 0.0
2013 45 19 0.28 3.4
2012 60 32 0.00 0.0
2011 67 27 0.00 0.0
2010 56 31 0.00 0.0
2009 72 25 0.00 0.0
2008 47 17 0.00 0.0
2007 48 31 0.09 0.0
2006 33 11 0.00 0.0
2005 45 28 0.23 0.0
2004 63 20 0.00 0.0
2003 45 30 0.00 0.0
2002 17 0 0.00 0.1
2001 59 31 0.01 0.0
2000 32 11 0.00 0.0
1999 56 20 0.00 0.0
1998 54 27 0.00 0.0
1997 52 24 0.00 n/a
1996 50 29 0.00 0.0
1995 67 44 0.03 0.0
1994 61 35 0.00 0.0
1993 48 28 0.00 0.0
1992 33 22 0.06 1.2
1991 51 28 0.00 0.0
1990 63 27 0.00 0.0
1989 53 26 0.00 0.0
1988 62 37 0.00 0.0
1987 32 13 0.00 0.0
1986 64 31 0.00 0.0
1985 59 24 0.00 0.0
1984 60 28 0.00 0.0
1983 40 11 0.00 0.0
1982 41 15 0.00 0.0
1981 36 25 0.05 0.5
1980 52 22 0.02 0.0
1979 45 26 0.02 0.2
1978 64 28 0.00 0.0
1977 42 12 0.00 0.0
1976 46 23 0.00 0.0
1975 48 29 0.00 0.0
1974 41 12 0.00 0.0
1973 44 29 0.00 0.0
1972 58 31 0.00 0.0
1971 45 15 0.00 0.0
1970 36 22 0.00 0.2
1969 49 23 0.00 0.0
1968 34 7 0.00 0.0
1967 56 34 0.00 0.0
1966 46 24 0.00 0.0
1965 42 4 0.00 0.0
1964 47 28 0.00 0.0
1963 59 29 0.00 0.0
1962 49 27 0.00 0.0
1961 45 26 0.12 1.7
1960 65 33 0.00 0.0
1959 52 28 0.00 0.0
1958 55 34 0.00 0.0
1957 61 27 0.22 3.3
1956 58 27 0.00 0.0
1955 24 -6 0.00 0.0
1954 40 22 0.05 0.5
1953 42 23 0.00 0.0
1952 22 14 0.00 0.2
1951 62 31 0.00 0.0
1950 43 22 0.00 0.0
1949 50 25 0.00 0.0
1948 n/a n/a n/a n/a
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 66 24 0.00 0.0
1938 40 29 0.00 0.0
1937 n/a n/a n/a n/a
1936 55 24 0.00 0.0
1935 45 11 0.00 n/a
1934 54 31 0.00 0.0
1933 n/a n/a n/a 2.5
1932 40 20 0.20 2.0
1931 64 23 n/a n/a
1930 56 29 n/a n/a
1929 46 30 0.00 0.0
1928 65 30 n/a n/a
1927 44 23 n/a n/a
1926 55 28 n/a n/a
1925 58 24 n/a n/a
1924 35 23 0.09 1.2
1923 30 20 0.04 n/a
1922 60 23 0.00 n/a
1921 55 16 0.00 0.0
1920 n/a n/a n/a n/a
1919 n/a n/a n/a n/a
1918 58 28 0.00 0.0
1917 47 30 0.00 n/a
1916 61 43 0.00 0.0
1915 44 18 0.00 0.0
1914 32 2 0.00 0.0
1913 n/a n/a n/a n/a
1912 35 -9 0.00 0.0
1911 70 38 n/a 0.0
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
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 50 20 0.00 n/a
1901 56 27 0.00 0.0
What's the all-time high for Casper on 3/21?
For the date of Mar 21, the highest temperature ever reached in Casper history is 72 °F which happened in 2009.
Highest Temperatures in Casper on March 21
Rank Temperature Year
1 72 °F 2009
2 71 °F 2015
3 70 °F 1911
4 67 °F 1995
4 67 °F 2011
4 67 °F 2016
7 66 °F 1939
8 65 °F 1928
8 65 °F 1960
10 64 °F 1978
10 64 °F 1986
10 64 °F 1931
What's the all-time low for Casper on 3/21?
For the date of Mar 21, the lowest temperature ever reached in Casper history is -9 °F which happened in 1912.
Lowest Temperatures in Casper on March 21
Rank Temperature Year
1 -9 °F 1912
2 -6 °F 1955
3 0 °F 2002
4 2 °F 1914
5 4 °F 1965
6 7 °F 1968
7 11 °F 1983
7 11 °F 2006
7 11 °F 2000
7 11 °F 1935
Lowest High Temperatures in Casper on March 21
Rank Temperature Year
1 17 °F 2002
2 22 °F 1952
3 24 °F 1955
4 30 °F 1923
5 32 °F 1914
5 32 °F 2000
5 32 °F 1987
8 33 °F 2006
8 33 °F 1992
10 34 °F 1968
What's the most it has ever rained in Casper on 3/21?
For the date of Mar 21, the most precipitation ever recorded in Casper history is 0.28 inches which happened in 2013.
All-Time Most Precipitation in Casper on March 21
Rank Precipitation Year
1 0.28 inches 2013
2 0.24 inches 2021
3 0.23 inches 2005
4 0.22 inches 1957
5 0.20 inches 1932
6 0.12 inches 1961
7 0.09 inches 1924
7 0.09 inches 2007
9 0.06 inches 1992
10 0.05 inches 1954
10 0.05 inches 1981
All-Time Most Snow in Casper on March 21
Rank Precipitation Year
1 3.4 inches 2013
2 3.3 inches 1957
3 3.0 inches 2021
4 2.5 inches 1933
5 2.0 inches 1932
6 1.7 inches 1961
7 1.2 inches 1992
7 1.2 inches 1924
9 0.5 inches 1981
9 0.5 inches 1954
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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