Casper May 15 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of May 15.
May 15 All-Time Records
1900–2024
Highest temperature 87 °F 1984
Lowest temperature 26 °F 1912
Lowest daily high 42 °F 1976
Highest daily low 58 °F 1931
Most precipitation 1.52 inches 1991
Most snow 3.5 inches 1923
May 15 Average Weather
1991–2020 1
Average high 66.7 °F
Average low 37.3 °F
Chance precipitation 36.3%
Chance snow 5.5%
Casper May 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 70 45 0.00 0.0
2022 72 31 0.00 0.0
2021 70 37 0.29 0.0
2020 68 34 0.00 0.0
2019 79 45 0.00 0.0
2018 73 36 0.00 0.0
2017 76 41 0.00 0.0
2016 51 33 0.33 0.0
2015 59 38 0.31 0.0
2014 64 37 0.04 0.0
2013 83 41 0.05 0.0
2012 84 37 0.00 0.0
2011 56 31 0.00 0.0
2010 54 35 0.01 0.0
2009 61 35 0.02 0.0
2008 61 40 0.02 0.0
2007 65 39 0.00 0.0
2006 72 32 0.00 0.0
2005 73 33 0.00 0.0
2004 67 32 0.00 0.0
2003 75 37 0.00 0.0
2002 68 39 0.00 0.0
2001 78 45 0.00 0.0
2000 76 42 0.00 0.0
1999 65 33 0.00 0.0
1998 64 41 0.17 n/a
1997 79 34 0.00 n/a
1996 84 45 0.04 n/a
1995 76 40 0.00 0.0
1994 84 40 0.00 0.0
1993 66 51 0.04 0.0
1992 80 41 0.05 0.0
1991 52 42 1.52 0.0
1990 64 34 0.00 0.0
1989 64 39 0.01 0.0
1988 76 34 0.00 0.0
1987 86 54 0.01 0.0
1986 62 30 0.00 0.0
1985 67 31 0.00 0.0
1984 87 56 0.00 0.0
1983 59 27 0.00 0.0
1982 56 42 0.06 0.0
1981 76 40 0.00 0.0
1980 55 40 0.00 0.0
1979 77 38 0.00 0.0
1978 86 47 0.00 0.0
1977 61 39 1.13 0.0
1976 42 33 0.36 1.4
1975 80 41 0.00 0.0
1974 61 35 0.00 0.0
1973 77 35 0.00 0.0
1972 80 44 0.00 0.0
1971 73 39 0.00 0.0
1970 65 31 0.00 0.0
1969 71 41 0.39 0.0
1968 47 33 0.31 0.0
1967 61 34 0.01 0.0
1966 69 33 0.00 0.0
1965 62 39 0.00 0.0
1964 78 46 0.00 0.0
1963 71 42 0.11 0.0
1962 63 32 0.00 0.0
1961 57 43 0.00 0.0
1960 67 34 0.00 0.0
1959 69 37 0.00 0.0
1958 58 40 0.00 0.0
1957 46 37 0.06 0.0
1956 62 39 0.00 0.0
1955 61 45 0.00 0.0
1954 78 43 0.00 0.0
1953 61 34 0.05 0.0
1952 56 42 0.37 0.0
1951 56 44 0.09 0.0
1950 67 43 0.03 0.0
1949 69 43 0.12 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 81 40 0.00 0.0
1938 66 44 0.07 0.0
1937 73 38 0.00 0.0
1936 86 56 0.00 0.0
1935 62 34 0.00 0.0
1934 83 36 0.00 0.0
1933 64 32 0.00 n/a
1932 59 33 0.50 0.0
1931 83 58 n/a n/a
1930 63 34 0.50 0.0
1929 74 35 0.04 n/a
1928 56 42 0.35 0.0
1927 79 41 n/a n/a
1926 72 44 0.00 n/a
1925 63 44 0.69 n/a
1924 75 34 n/a n/a
1923 52 28 0.34 3.5
1922 54 36 0.02 n/a
1921 58 38 0.02 n/a
1920 51 35 0.02 n/a
1919 n/a n/a n/a n/a
1918 78 40 0.00 n/a
1917 79 47 0.02 n/a
1916 44 29 0.13 0.8
1915 n/a n/a n/a n/a
1914 70 31 0.00 0.0
1913 n/a n/a n/a n/a
1912 70 26 0.00 n/a
1911 82 44 0.10 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 82 44 0.00 n/a
What's the all-time high for Casper on 5/15?
For the date of May 15, the highest temperature ever reached in Casper history is 87 °F which happened in 1984.
Highest Temperatures in Casper on May 15
Rank Temperature Year
1 87 °F 1984
2 86 °F 1987
2 86 °F 1978
2 86 °F 1936
5 84 °F 1994
5 84 °F 2012
5 84 °F 1996
8 83 °F 1931
8 83 °F 2013
8 83 °F 1934
What's the all-time low for Casper on 5/15?
For the date of May 15, the lowest temperature ever reached in Casper history is 26 °F which happened in 1912.
Lowest Temperatures in Casper on May 15
Rank Temperature Year
1 26 °F 1912
2 27 °F 1983
3 28 °F 1923
4 29 °F 1916
5 30 °F 1986
6 31 °F 1914
6 31 °F 1970
6 31 °F 1985
6 31 °F 2022
6 31 °F 2011
Lowest High Temperatures in Casper on May 15
Rank Temperature Year
1 42 °F 1976
2 44 °F 1916
3 46 °F 1957
4 47 °F 1968
5 51 °F 1920
5 51 °F 2016
7 52 °F 1923
7 52 °F 1991
9 54 °F 1922
9 54 °F 2010
What's the most it has ever rained in Casper on 5/15?
For the date of May 15, the most precipitation ever recorded in Casper history is 1.52 inches which happened in 1991.
All-Time Most Precipitation in Casper on May 15
Rank Precipitation Year
1 1.52 inches 1991
2 1.13 inches 1977
3 0.69 inches 1925
4 0.50 inches 1930
4 0.50 inches 1932
6 0.39 inches 1969
7 0.37 inches 1952
8 0.36 inches 1976
9 0.35 inches 1928
10 0.34 inches 1923
All-Time Most Snow in Casper on May 15
Rank Precipitation Year
1 3.5 inches 1923
2 1.4 inches 1976
3 0.8 inches 1916
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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