Casper August 20 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of August 20.
August 20 All-Time Records
1900–2024
Highest temperature 100 °F 1911
Lowest temperature 38 °F 2016
Lowest daily high 62 °F 1979
Highest daily low 67 °F 1973
Most precipitation 0.70 inches 1920
Most snow none -
August 20 Average Weather
1991–2020 1
Average high 86.4 °F
Average low 51.1 °F
Chance precipitation 17.5%
Chance snow 0%
Casper August 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 88 57 0.05 0.0
2022 85 47 0.00 0.0
2021 69 48 0.00 0.0
2020 91 56 0.00 0.0
2019 93 52 0.00 0.0
2018 77 46 0.06 0.0
2017 91 46 0.00 0.0
2016 76 38 0.00 0.0
2015 84 43 0.00 0.0
2014 86 62 0.00 0.0
2013 92 58 0.01 0.0
2012 85 55 0.00 0.0
2011 88 55 0.04 0.0
2010 88 60 0.00 0.0
2009 81 45 0.00 0.0
2008 93 54 0.00 0.0
2007 87 55 0.00 0.0
2006 89 53 0.00 0.0
2005 84 46 0.00 0.0
2004 77 49 0.00 0.0
2003 89 51 0.00 0.0
2002 88 58 0.04 0.0
2001 88 62 0.00 0.0
2000 90 55 0.00 0.0
1999 89 55 0.00 0.0
1998 88 56 0.00 n/a
1997 87 46 0.00 n/a
1996 91 59 0.00 n/a
1995 90 49 0.00 0.0
1994 87 51 0.00 0.0
1993 86 56 0.00 0.0
1992 86 55 0.00 0.0
1991 85 61 0.00 0.0
1990 84 56 0.00 0.0
1989 81 46 0.06 0.0
1988 90 59 0.00 0.0
1987 94 52 0.00 0.0
1986 74 52 0.14 0.0
1985 91 43 0.00 0.0
1984 80 54 0.03 0.0
1983 87 56 0.02 0.0
1982 89 58 0.15 0.0
1981 92 60 0.00 0.0
1980 72 46 0.00 0.0
1979 62 51 0.14 0.0
1978 85 51 0.01 0.0
1977 89 52 0.00 0.0
1976 90 59 0.00 0.0
1975 82 55 0.00 0.0
1974 73 43 0.00 0.0
1973 97 67 0.00 0.0
1972 85 55 0.00 0.0
1971 92 51 0.00 0.0
1970 88 49 0.00 0.0
1969 90 56 0.02 0.0
1968 86 52 0.00 0.0
1967 87 49 0.00 0.0
1966 74 44 0.06 0.0
1965 77 49 0.00 0.0
1964 63 40 0.00 0.0
1963 89 62 0.10 0.0
1962 87 50 0.00 0.0
1961 90 64 0.00 0.0
1960 89 52 0.00 0.0
1959 85 59 0.00 0.0
1958 76 54 0.00 0.0
1957 88 60 0.00 0.0
1956 77 48 0.00 0.0
1955 89 55 0.00 0.0
1954 86 58 0.00 0.0
1953 90 54 0.00 0.0
1952 86 56 0.07 0.0
1951 73 50 0.00 0.0
1950 76 41 0.00 0.0
1949 86 53 0.00 0.0
1948 85 46 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 78 39 0.00 0.0
1938 80 48 0.00 n/a
1937 86 45 0.00 0.0
1936 81 55 0.08 0.0
1935 87 48 0.00 0.0
1934 75 48 0.00 0.0
1933 85 55 0.00 0.0
1932 86 42 0.00 0.0
1931 89 52 0.00 n/a
1930 90 54 n/a n/a
1929 91 55 0.00 n/a
1928 82 54 n/a n/a
1927 83 53 n/a n/a
1926 83 45 n/a n/a
1925 85 53 n/a n/a
1924 85 51 n/a n/a
1923 84 64 n/a n/a
1922 87 67 0.00 n/a
1921 86 47 0.00 n/a
1920 69 49 0.70 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 77 50 0.00 0.0
1916 78 50 0.14 n/a
1915 84 40 0.02 0.0
1914 78 59 0.00 0.0
1913 94 63 0.00 n/a
1912 95 38 0.00 n/a
1911 100 59 0.00 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 83 53 0.07 0.0
What's the all-time high for Casper on 8/20?
For the date of Aug 20, the highest temperature ever reached in Casper history is 100 °F which happened in 1911.
Highest Temperatures in Casper on August 20
Rank Temperature Year
1 100 °F 1911
2 97 °F 1973
3 95 °F 1912
4 94 °F 1987
4 94 °F 1913
6 93 °F 2008
6 93 °F 2019
8 92 °F 1971
8 92 °F 1981
8 92 °F 2013
What's the all-time low for Casper on 8/20?
For the date of Aug 20, the lowest temperature ever reached in Casper history is 38 °F which has happened 2 times, most recently in 2016.
Lowest Temperatures in Casper on August 20
Rank Temperature Year
1 38 °F 2016
1 38 °F 1912
3 39 °F 1939
4 40 °F 1964
4 40 °F 1915
6 41 °F 1950
7 42 °F 1932
8 43 °F 2015
8 43 °F 1985
8 43 °F 1974
Lowest High Temperatures in Casper on August 20
Rank Temperature Year
1 62 °F 1979
2 63 °F 1964
3 69 °F 1920
3 69 °F 2021
5 72 °F 1980
6 73 °F 1951
6 73 °F 1974
8 74 °F 1986
8 74 °F 1966
10 75 °F 1934
What's the most it has ever rained in Casper on 8/20?
For the date of Aug 20, the most precipitation ever recorded in Casper history is 0.70 inches which happened in 1920.
All-Time Most Precipitation in Casper on August 20
Rank Precipitation Year
1 0.70 inches 1920
2 0.15 inches 1982
3 0.14 inches 1916
3 0.14 inches 1986
3 0.14 inches 1979
6 0.10 inches 1963
7 0.08 inches 1936
8 0.07 inches 1901
8 0.07 inches 1952
10 0.06 inches 1989
10 0.06 inches 1966
10 0.06 inches 2018
Weather Station Details
Years Station Coordinates
1949–2024 Casper-Natrona County International Airport location
1900–1948 Casper 2 E location