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Sioux Falls August 18 Weather Records

Daily averages and all-time records for weather in Sioux Falls, South Dakota for the date of August 18.
August 18 All-Time Records
1932–2022
Highest temperature 101 °F 1983
Lowest temperature 44 °F 2002
Lowest daily high 67 °F 1956
Highest daily low 77 °F 1936
Most precipitation 1.2 inches 1947
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 81.5 °F
Average low 60.1 °F
Chance precipitation 29.7%
Chance snow 0%
Sioux Falls August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 89 66 0.00 0.0
2021 89 71 0.00 0.0
2020 86 54 0.00 0.0
2019 74 59 0.00 0.0
2018 82 61 0.00 0.0
2017 81 60 0.07 0.0
2016 92 67 0.00 0.0
2015 68 52 0.99 0.0
2014 88 63 0.00 0.0
2013 80 61 0.00 0.0
2012 72 53 0.79 0.0
2011 80 63 0.11 0.0
2010 81 63 0.00 0.0
2009 79 51 0.00 0.0
2008 86 65 0.00 0.0
2007 86 61 0.66 0.0
2006 80 64 0.19 0.0
2005 84 62 0.40 0.0
2004 79 47 0.00 0.0
2003 92 73 0.00 0.0
2002 73 44 0.00 0.0
2001 75 54 0.00 0.0
2000 75 49 0.00 0.0
1999 80 56 0.00 0.0
1998 85 72 0.00 0.0
1997 69 48 0.00 0.0
1996 76 61 0.00 0.0
1995 96 69 0.11 0.0
1994 86 63 0.00 0.0
1993 80 67 0.48 0.0
1992 77 53 0.00 0.0
1991 80 58 0.00 0.0
1990 91 64 0.04 0.0
1989 83 61 0.00 0.0
1988 83 61 0.00 0.0
1987 77 51 0.00 0.0
1986 81 57 0.05 0.0
1985 72 48 0.00 0.0
1984 84 63 0.00 0.0
1983 101 69 0.00 0.0
1982 84 69 0.00 0.0
1981 75 48 0.00 0.0
1980 86 60 0.02 0.0
1979 84 61 0.22 0.0
1978 70 56 0.01 0.0
1977 70 53 0.04 0.0
1976 98 75 0.00 0.0
1975 74 56 0.00 0.0
1974 90 54 0.00 0.0
1973 94 74 0.09 0.0
1972 95 69 0.00 0.0
1971 97 68 0.28 0.0
1970 93 69 0.00 0.0
1969 78 59 0.01 0.0
1968 85 59 0.36 0.0
1967 72 49 0.22 0.0
1966 76 49 0.00 0.0
1965 83 53 0.00 0.0
1964 89 56 0.00 0.0
1963 68 48 0.01 0.0
1962 84 56 0.00 0.0
1961 78 61 0.70 0.0
1960 77 61 0.18 0.0
1959 94 73 0.00 0.0
1958 96 61 0.04 0.0
1957 79 56 0.00 0.0
1956 67 51 0.00 0.0
1955 94 71 0.00 0.0
1954 79 59 0.11 0.0
1953 84 55 0.00 0.0
1952 78 53 0.00 0.0
1951 81 55 0.02 0.0
1950 79 45 0.00 0.0
1949 79 64 0.65 0.0
1948 91 59 0.00 0.0
1947 91 67 1.24 0.0
1946 79 50 0.00 0.0
1945 89 67 0.00 0.0
1944 76 51 0.00 0.0
1943 78 51 0.00 0.0
1942 87 58 0.00 0.0
1941 76 54 0.00 0.0
1940 70 53 0.00 0.0
1939 87 61 0.00 0.0
1938 85 59 0.00 0.0
1937 79 68 1.02 0.0
1936 97 77 0.00 0.0
1935 92 67 0.00 0.0
1934 95 68 0.00 0.0
1933 76 56 0.00 0.0
1932 74 49 0.00 0.0
All-Time Highest Temperatures in Sioux Falls on August 18
Rank Temperature Year
1 101 °F 1983
2 98 °F 1976
3 97 °F 1936
3 97 °F 1971
5 96 °F 1958
5 96 °F 1995
7 95 °F 1972
7 95 °F 1934
9 94 °F 1959
9 94 °F 1973
9 94 °F 1955
All-Time Lowest Temperatures in Sioux Falls on August 18
Rank Temperature Year
1 44 °F 2002
2 45 °F 1950
3 47 °F 2004
4 48 °F 1985
4 48 °F 1997
4 48 °F 1963
4 48 °F 1981
8 49 °F 1932
8 49 °F 1967
8 49 °F 1966
8 49 °F 2000
Lowest High Temperatures in Sioux Falls on August 18
Rank Temperature Year
1 67 °F 1956
2 68 °F 2015
2 68 °F 1963
4 69 °F 1997
5 70 °F 1978
5 70 °F 1940
5 70 °F 1977
8 72 °F 2012
8 72 °F 1967
8 72 °F 1985
All-Time Most Precipitation in Sioux Falls on August 18
Rank Precipitation Year
1 1.2 inches 1947
2 1.0 inches 1937
3 1.0 inches 2015
4 0.8 inches 2012
5 0.7 inches 1961
6 0.7 inches 2007
7 0.6 inches 1949
8 0.5 inches 1993
9 0.4 inches 2005
10 0.4 inches 1968
Weather Station Details
Years Station Coordinates
1932–2022 Sioux Falls location