Casper July 21 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of July 21.
July 21 All-Time Records
1900–2024
Highest temperature 105 °F 1911
Lowest temperature 36 °F 1915
Lowest daily high 60 °F 1978
Highest daily low 67 °F 2007
Most precipitation 1.33 inches 1951
Most snow none -
July 21 Average Weather
1991–2020 1
Average high 89.4 °F
Average low 53.8 °F
Chance precipitation 22.3%
Chance snow 0%
Casper July 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 85 53 0.00 0.0
2022 97 47 0.00 0.0
2021 94 61 0.00 0.0
2020 89 53 0.00 0.0
2019 83 50 0.00 0.0
2018 97 56 0.00 0.0
2017 92 63 0.00 0.0
2016 96 58 0.00 0.0
2015 84 51 0.00 0.0
2014 95 59 0.00 0.0
2013 96 51 0.00 0.0
2012 98 62 0.11 0.0
2011 94 51 0.00 0.0
2010 89 57 0.09 0.0
2009 83 43 0.00 0.0
2008 95 56 0.00 0.0
2007 99 67 0.00 0.0
2006 88 54 0.00 0.0
2005 98 54 0.00 0.0
2004 89 53 0.00 0.0
2003 94 61 0.00 0.0
2002 87 56 0.00 0.0
2001 94 61 0.00 0.0
2000 88 48 0.00 0.0
1999 94 48 0.00 0.0
1998 83 57 0.00 n/a
1997 84 56 0.00 n/a
1996 91 48 0.00 n/a
1995 88 55 0.00 0.0
1994 88 51 0.00 0.0
1993 91 53 0.00 0.0
1992 77 52 0.12 0.0
1991 93 63 0.00 0.0
1990 65 49 0.19 0.0
1989 98 57 0.00 0.0
1988 96 48 0.00 0.0
1987 95 61 0.07 0.0
1986 82 53 0.00 0.0
1985 89 54 0.00 0.0
1984 91 59 0.08 0.0
1983 89 59 0.00 0.0
1982 100 56 0.00 0.0
1981 93 53 0.00 0.0
1980 88 52 0.00 0.0
1979 91 53 0.00 0.0
1978 60 50 0.92 0.0
1977 80 55 0.00 0.0
1976 84 55 0.01 0.0
1975 91 55 0.01 0.0
1974 85 61 0.00 0.0
1973 80 50 0.05 0.0
1972 86 52 0.00 0.0
1971 86 61 0.01 0.0
1970 93 55 0.03 0.0
1969 91 55 0.00 0.0
1968 87 49 0.00 0.0
1967 95 58 0.00 0.0
1966 87 54 0.01 0.0
1965 92 58 0.00 0.0
1964 95 65 0.00 0.0
1963 92 57 0.00 0.0
1962 89 53 0.00 0.0
1961 73 49 0.00 0.0
1960 95 62 0.00 0.0
1959 92 57 0.00 0.0
1958 77 51 0.01 0.0
1957 85 57 0.00 0.0
1956 87 55 0.00 0.0
1955 91 65 0.00 0.0
1954 94 58 0.03 0.0
1953 83 51 0.00 0.0
1952 94 59 0.00 0.0
1951 66 52 1.33 0.0
1950 82 52 0.00 0.0
1949 84 39 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 87 44 0.00 0.0
1938 84 51 0.00 n/a
1937 95 51 0.00 0.0
1936 95 56 0.00 0.0
1935 85 59 0.02 0.0
1934 97 57 0.06 0.0
1933 92 57 0.00 0.0
1932 91 59 0.00 0.0
1931 n/a n/a n/a n/a
1930 78 56 n/a n/a
1929 98 62 n/a n/a
1928 79 54 0.35 n/a
1927 90 63 0.06 n/a
1926 89 51 n/a n/a
1925 82 55 0.00 n/a
1924 80 50 n/a n/a
1923 89 64 n/a n/a
1922 90 60 0.07 n/a
1921 90 66 0.00 n/a
1920 98 62 0.00 0.0
1919 n/a n/a n/a n/a
1918 84 54 0.35 n/a
1917 93 55 0.00 0.0
1916 92 56 0.00 n/a
1915 78 36 0.00 0.0
1914 86 59 0.00 0.0
1913 90 52 0.03 n/a
1912 98 55 0.10 n/a
1911 105 55 0.01 n/a
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 n/a n/a n/a n/a
1901 100 60 0.00 n/a
What's the all-time high for Casper on 7/21?
For the date of Jul 21, the highest temperature ever reached in Casper history is 105 °F which happened in 1911.
Highest Temperatures in Casper on July 21
Rank Temperature Year
1 105 °F 1911
2 100 °F 1901
2 100 °F 1982
4 99 °F 2007
5 98 °F 1912
5 98 °F 2012
5 98 °F 2005
5 98 °F 1920
5 98 °F 1989
5 98 °F 1929
What's the all-time low for Casper on 7/21?
For the date of Jul 21, the lowest temperature ever reached in Casper history is 36 °F which happened in 1915.
Lowest Temperatures in Casper on July 21
Rank Temperature Year
1 36 °F 1915
2 39 °F 1949
3 43 °F 2009
4 44 °F 1939
5 47 °F 2022
6 48 °F 1999
6 48 °F 1988
6 48 °F 2000
6 48 °F 1996
10 49 °F 1990
10 49 °F 1968
10 49 °F 1961
Lowest High Temperatures in Casper on July 21
Rank Temperature Year
1 60 °F 1978
2 65 °F 1990
3 66 °F 1951
4 73 °F 1961
5 77 °F 1992
5 77 °F 1958
7 78 °F 1930
7 78 °F 1915
9 79 °F 1928
10 80 °F 1924
10 80 °F 1973
10 80 °F 1977
What's the most it has ever rained in Casper on 7/21?
For the date of Jul 21, the most precipitation ever recorded in Casper history is 1.33 inches which happened in 1951.
All-Time Most Precipitation in Casper on July 21
Rank Precipitation Year
1 1.33 inches 1951
2 0.92 inches 1978
3 0.35 inches 1918
3 0.35 inches 1928
5 0.19 inches 1990
6 0.12 inches 1992
7 0.11 inches 2012
8 0.10 inches 1912
9 0.09 inches 2010
10 0.08 inches 1984
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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