Casper October 21 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of October 21.
October 21 All-Time Records
1900–2023
Highest temperature 83 °F 1934
Lowest temperature 12 °F 1949
Lowest daily high 31 °F 1936
Highest daily low 51 °F 1921
Most precipitation 0.46 inches 2008
Most snow 2.0 inches 2007
October 21 Average Weather
1991–2020 1
Average high 57.4 °F
Average low 29.5 °F
Chance precipitation 23.0%
Chance snow 12.8%
Casper October 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 73 30 0.00 0.0
2021 63 38 0.00 0.0
2020 68 33 0.01 0.0
2019 43 27 0.00 0.0
2018 71 37 0.00 0.0
2017 51 28 0.00 0.0
2016 69 41 0.00 0.0
2015 58 32 0.04 0.0
2014 73 45 0.00 0.0
2013 57 31 0.00 0.0
2012 54 40 0.00 0.0
2011 65 30 0.00 0.0
2010 72 27 0.00 0.0
2009 46 23 0.00 0.0
2008 49 32 0.46 1.4
2007 41 24 0.14 2.0
2006 42 27 0.00 0.2
2005 59 32 0.00 0.0
2004 61 45 0.00 0.0
2003 77 41 0.00 0.0
2002 58 23 0.00 0.0
2001 69 18 0.00 0.0
2000 71 42 0.00 0.0
1999 69 34 0.00 0.0
1998 52 25 0.00 0.0
1997 58 28 0.00 n/a
1996 39 19 0.00 0.0
1995 66 33 0.08 0.5
1994 62 36 0.00 0.0
1993 63 31 0.00 0.0
1992 79 47 0.00 0.0
1991 70 33 0.00 0.0
1990 53 23 0.00 0.0
1989 67 46 0.00 0.0
1988 71 25 0.00 0.0
1987 68 24 0.00 0.0
1986 58 40 0.05 0.0
1985 68 42 0.00 0.0
1984 35 13 0.00 0.0
1983 69 31 0.00 0.0
1982 61 22 0.00 0.0
1981 32 20 0.02 0.2
1980 60 39 0.00 0.0
1979 47 23 0.00 0.0
1978 62 39 0.00 0.0
1977 48 41 0.15 0.0
1976 62 23 0.00 0.0
1975 71 30 0.00 0.0
1974 68 40 0.00 0.0
1973 71 38 0.00 0.0
1972 57 34 0.18 0.0
1971 49 28 0.00 0.0
1970 58 36 0.00 0.0
1969 61 34 0.00 0.0
1968 51 29 0.08 0.3
1967 73 41 0.00 0.0
1966 47 21 0.00 0.0
1965 69 32 0.00 0.0
1964 71 35 0.00 0.0
1963 65 39 0.00 0.0
1962 67 40 0.00 0.0
1961 69 37 0.00 0.0
1960 63 34 0.00 0.0
1959 58 27 0.00 0.0
1958 50 31 0.00 0.0
1957 49 38 0.05 0.0
1956 70 40 0.00 0.0
1955 64 37 0.00 0.0
1954 67 32 0.00 0.0
1953 46 31 0.08 0.0
1952 65 37 0.00 0.0
1951 37 27 0.13 1.3
1950 73 32 0.00 0.0
1949 32 12 0.02 0.6
1948 69 22 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 0.00 0.0
1939 68 41 0.00 0.0
1938 69 37 0.00 0.0
1937 54 39 0.01 0.0
1936 31 23 0.00 0.0
1935 65 26 0.00 0.0
1934 83 44 0.00 0.0
1933 n/a n/a 0.00 0.0
1932 59 31 0.00 0.0
1931 48 37 0.05 0.0
1930 62 30 n/a n/a
1929 60 44 n/a n/a
1928 64 31 0.02 n/a
1927 75 33 n/a n/a
1926 66 33 n/a n/a
1925 62 43 n/a n/a
1924 61 36 n/a n/a
1923 66 26 n/a n/a
1922 64 38 0.17 n/a
1921 77 51 0.00 n/a
1920 47 35 0.00 n/a
1919 n/a n/a n/a n/a
1918 68 32 n/a 0.0
1917 54 41 0.00 0.0
1916 56 41 0.00 n/a
1915 64 28 0.00 0.0
1914 72 35 0.00 n/a
1913 52 37 0.20 0.0
1912 n/a n/a n/a n/a
1911 62 n/a 0.00 n/a
1910 n/a n/a n/a n/a
1909 71 31 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
What's the all-time high for Casper on 10/21?
For the date of Oct 21, the highest temperature ever reached in Casper history is 83 °F which happened in 1934.
Highest Temperatures in Casper on October 21
Rank Temperature Year
1 83 °F 1934
2 79 °F 1992
3 77 °F 1921
3 77 °F 2003
5 75 °F 1927
6 73 °F 2014
6 73 °F 2022
6 73 °F 1967
6 73 °F 1950
10 72 °F 1914
10 72 °F 2010
What's the all-time low for Casper on 10/21?
For the date of Oct 21, the lowest temperature ever reached in Casper history is 12 °F which happened in 1949.
Lowest Temperatures in Casper on October 21
Rank Temperature Year
1 12 °F 1949
2 13 °F 1984
3 18 °F 2001
4 19 °F 1996
5 20 °F 1981
6 21 °F 1966
7 22 °F 1982
7 22 °F 1948
9 23 °F 1990
9 23 °F 1979
9 23 °F 2009
9 23 °F 1936
9 23 °F 2002
9 23 °F 1976
Lowest High Temperatures in Casper on October 21
Rank Temperature Year
1 31 °F 1936
2 32 °F 1949
2 32 °F 1981
4 35 °F 1984
5 37 °F 1951
6 39 °F 1996
7 41 °F 2007
8 42 °F 2006
9 43 °F 2019
10 46 °F 2009
10 46 °F 1953
What's the most it has ever rained in Casper on 10/21?
For the date of Oct 21, the most precipitation ever recorded in Casper history is 0.46 inches which happened in 2008.
All-Time Most Precipitation in Casper on October 21
Rank Precipitation Year
1 0.46 inches 2008
2 0.20 inches 1913
3 0.18 inches 1972
4 0.17 inches 1922
5 0.15 inches 1977
6 0.14 inches 2007
7 0.13 inches 1951
8 0.08 inches 1968
8 0.08 inches 1953
8 0.08 inches 1995
All-Time Most Snow in Casper on October 21
Rank Precipitation Year
1 2.0 inches 2007
2 1.4 inches 2008
3 1.3 inches 1951
4 0.6 inches 1949
5 0.5 inches 1995
6 0.3 inches 1968
7 0.2 inches 1981
7 0.2 inches 2006
Weather Station Details
Years Station Coordinates
1949–2023 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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