Casper August 18 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of August 18.
August 18 All-Time Records
1900–2024
Highest temperature 101 °F 1911
Lowest temperature 37 °F 2009
Lowest daily high 62 °F 1956
Highest daily low 70 °F 2023
Most precipitation 0.48 inches 1978
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 86.6 °F
Average low 51.5 °F
Chance precipitation 18.0%
Chance snow 0%
Casper August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 93 70 0.00 0.0
2022 86 51 0.00 0.0
2021 85 49 0.14 0.0
2020 97 52 0.00 0.0
2019 90 46 0.00 0.0
2018 77 52 0.13 0.0
2017 87 46 0.00 0.0
2016 75 51 0.05 0.0
2015 65 41 0.03 0.0
2014 88 50 0.00 0.0
2013 94 54 0.00 0.0
2012 81 46 0.00 0.0
2011 93 53 0.00 0.0
2010 97 52 0.00 0.0
2009 81 37 0.00 0.0
2008 84 45 0.00 0.0
2007 90 58 0.00 0.0
2006 81 54 0.00 0.0
2005 79 47 0.04 0.0
2004 63 52 0.18 0.0
2003 71 52 0.25 0.0
2002 80 42 0.00 0.0
2001 93 44 0.00 0.0
2000 89 48 0.18 0.0
1999 89 46 0.00 0.0
1998 89 58 0.06 n/a
1997 85 53 0.01 n/a
1996 89 53 0.17 n/a
1995 74 51 0.00 0.0
1994 91 55 0.00 0.0
1993 86 47 0.00 0.0
1992 90 51 0.00 0.0
1991 86 49 0.00 0.0
1990 83 50 0.18 0.0
1989 82 50 0.20 0.0
1988 92 49 0.00 0.0
1987 85 39 0.00 0.0
1986 99 58 0.00 0.0
1985 77 41 0.00 0.0
1984 90 52 0.00 0.0
1983 92 60 0.14 0.0
1982 95 59 0.00 0.0
1981 91 47 0.00 0.0
1980 90 56 0.00 0.0
1979 69 55 0.44 0.0
1978 64 43 0.48 0.0
1977 71 56 0.01 0.0
1976 86 65 0.00 0.0
1975 90 47 0.00 0.0
1974 89 49 0.00 0.0
1973 90 57 0.00 0.0
1972 83 57 0.00 0.0
1971 87 54 0.00 0.0
1970 91 53 0.00 0.0
1969 88 60 0.00 0.0
1968 70 48 0.00 0.0
1967 84 51 0.00 0.0
1966 90 53 0.01 0.0
1965 84 50 0.00 0.0
1964 90 62 0.00 0.0
1963 82 53 0.00 0.0
1962 87 62 0.03 0.0
1961 87 57 0.00 0.0
1960 77 44 0.00 0.0
1959 93 58 0.00 0.0
1958 88 61 0.00 0.0
1957 83 50 0.00 0.0
1956 62 50 0.00 0.0
1955 91 60 0.06 0.0
1954 82 52 0.00 0.0
1953 85 53 0.00 0.0
1952 92 56 0.00 0.0
1951 88 56 0.00 0.0
1950 89 53 0.00 0.0
1949 86 54 0.00 0.0
1948 95 59 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 91 58 0.00 0.0
1938 89 40 0.00 n/a
1937 86 56 0.00 0.0
1936 91 52 0.00 0.0
1935 79 56 0.00 0.0
1934 65 59 0.00 0.0
1933 n/a n/a 0.00 0.0
1932 91 62 0.00 0.0
1931 86 56 0.00 n/a
1930 84 51 n/a n/a
1929 91 61 0.10 n/a
1928 89 45 n/a n/a
1927 74 52 n/a n/a
1926 87 52 n/a n/a
1925 87 56 n/a n/a
1924 86 54 n/a n/a
1923 84 49 n/a n/a
1922 87 57 0.00 n/a
1921 90 64 0.00 n/a
1920 90 60 0.00 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 82 57 0.00 0.0
1916 85 70 0.00 n/a
1915 79 41 0.11 0.0
1914 82 49 0.00 0.0
1913 91 54 0.00 n/a
1912 100 44 0.27 n/a
1911 101 65 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 90 52 0.00 0.0
What's the all-time high for Casper on 8/18?
For the date of Aug 18, the highest temperature ever reached in Casper history is 101 °F which happened in 1911.
Highest Temperatures in Casper on August 18
Rank Temperature Year
1 101 °F 1911
2 100 °F 1912
3 99 °F 1986
4 97 °F 2010
4 97 °F 2020
6 95 °F 1948
6 95 °F 1982
8 94 °F 2013
9 93 °F 1959
9 93 °F 2001
9 93 °F 2011
9 93 °F 2023
What's the all-time low for Casper on 8/18?
For the date of Aug 18, the lowest temperature ever reached in Casper history is 37 °F which happened in 2009.
Lowest Temperatures in Casper on August 18
Rank Temperature Year
1 37 °F 2009
2 39 °F 1987
3 40 °F 1938
4 41 °F 1915
4 41 °F 1985
4 41 °F 2015
7 42 °F 2002
8 43 °F 1978
9 44 °F 2001
9 44 °F 1912
9 44 °F 1960
Lowest High Temperatures in Casper on August 18
Rank Temperature Year
1 62 °F 1956
2 63 °F 2004
3 64 °F 1978
4 65 °F 2015
4 65 °F 1934
6 69 °F 1979
7 70 °F 1968
8 71 °F 1977
8 71 °F 2003
10 74 °F 1927
10 74 °F 1995
What's the most it has ever rained in Casper on 8/18?
For the date of Aug 18, the most precipitation ever recorded in Casper history is 0.48 inches which happened in 1978.
All-Time Most Precipitation in Casper on August 18
Rank Precipitation Year
1 0.48 inches 1978
2 0.44 inches 1979
3 0.27 inches 1912
4 0.25 inches 2003
5 0.20 inches 1989
6 0.18 inches 2004
6 0.18 inches 2000
6 0.18 inches 1990
9 0.17 inches 1996
10 0.14 inches 1983
10 0.14 inches 2021
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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