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Sioux Falls September 18 Weather Records

Daily averages and all-time records for weather in Sioux Falls, South Dakota for the date of September 18.
September 18 All-Time Records
1932–2022
Highest temperature 94 °F 1947
Lowest temperature 30 °F 1991
Lowest daily high 45 °F 1991
Highest daily low 75 °F 1947
Most precipitation 2.1 inches 1986
Most snow none -
September 18 Average Weather
1991–2020 1
Average high 73.6 °F
Average low 49.8 °F
Chance precipitation 27.0%
Chance snow 0.1%
Sioux Falls September 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 77 53 0.00 0.0
2021 85 49 0.00 0.0
2020 71 44 0.00 0.0
2019 79 61 0.00 0.0
2018 70 61 0.71 0.0
2017 75 58 0.02 0.0
2016 83 58 0.00 0.0
2015 59 47 0.06 0.0
2014 77 52 0.00 0.0
2013 88 66 0.00 0.0
2012 68 34 0.00 0.0
2011 74 49 0.00 0.0
2010 50 40 0.05 0.0
2009 84 53 0.00 0.0
2008 82 51 0.00 0.0
2007 77 52 0.20 0.0
2006 51 43 0.03 0.0
2005 82 52 0.02 0.0
2004 84 54 0.00 0.0
2003 57 38 0.68 0.0
2002 79 57 0.46 0.0
2001 64 54 0.00 0.0
2000 83 67 0.00 0.0
1999 82 52 0.00 0.0
1998 90 63 0.00 0.0
1997 85 60 0.00 0.0
1996 62 50 0.00 0.0
1995 62 55 0.60 0.0
1994 82 46 0.00 0.0
1993 61 49 0.00 0.0
1992 60 42 0.00 0.0
1991 45 30 0.00 0.0
1990 65 55 0.23 0.0
1989 84 63 0.00 0.0
1988 83 63 0.30 0.0
1987 65 45 0.00 0.0
1986 60 51 2.07 0.0
1985 83 65 0.00 0.0
1984 91 57 0.00 0.0
1983 69 45 0.00 0.0
1982 71 39 0.00 0.0
1981 79 38 0.00 0.0
1980 64 51 0.00 0.0
1979 70 48 0.00 0.0
1978 80 55 0.11 0.0
1977 68 53 0.03 0.0
1976 87 58 0.00 0.0
1975 64 48 0.00 0.0
1974 91 45 0.00 0.0
1973 69 36 0.00 0.0
1972 87 47 0.00 0.0
1971 62 34 0.00 0.0
1970 85 43 0.00 0.0
1969 61 53 0.14 0.0
1968 56 50 1.42 0.0
1967 77 61 0.09 0.0
1966 71 43 0.00 0.0
1965 50 45 0.26 0.0
1964 68 60 0.00 0.0
1963 90 61 0.00 0.0
1962 78 48 0.00 0.0
1961 83 58 0.00 0.0
1960 56 48 0.69 0.0
1959 51 45 0.38 0.0
1958 77 54 0.00 0.0
1957 82 55 0.48 0.0
1956 83 49 0.00 0.0
1955 86 68 0.00 0.0
1954 75 52 0.07 0.0
1953 70 48 0.00 0.0
1952 65 41 0.00 0.0
1951 81 43 0.00 0.0
1950 87 51 0.00 0.0
1949 73 44 0.00 0.0
1948 88 60 0.00 0.0
1947 94 75 0.00 0.0
1946 78 54 0.23 0.0
1945 73 55 0.18 0.0
1944 73 54 0.68 0.0
1943 79 51 0.00 0.0
1941 87 61 0.00 0.0
1940 92 63 0.00 0.0
1939 80 56 0.00 0.0
1938 55 38 0.00 0.0
1937 74 56 0.00 0.0
1936 77 57 0.00 0.0
1935 84 56 0.00 0.0
1934 75 43 0.00 0.0
1933 87 55 0.00 0.0
1932 81 52 0.33 0.0
All-Time Highest Temperatures in Sioux Falls on September 18
Rank Temperature Year
1 94 °F 1947
2 92 °F 1940
3 91 °F 1984
3 91 °F 1974
5 90 °F 1998
5 90 °F 1963
7 88 °F 1948
7 88 °F 2013
9 87 °F 1941
9 87 °F 1950
9 87 °F 1972
9 87 °F 1976
9 87 °F 1933
All-Time Lowest Temperatures in Sioux Falls on September 18
Rank Temperature Year
1 30 °F 1991
2 34 °F 1971
2 34 °F 2012
4 36 °F 1973
5 38 °F 1938
5 38 °F 1981
5 38 °F 2003
8 39 °F 1982
9 40 °F 2010
10 41 °F 1952
Lowest High Temperatures in Sioux Falls on September 18
Rank Temperature Year
1 45 °F 1991
2 50 °F 2010
2 50 °F 1965
4 51 °F 1959
4 51 °F 2006
6 55 °F 1938
7 56 °F 1968
7 56 °F 1960
9 57 °F 2003
10 59 °F 2015
All-Time Most Precipitation in Sioux Falls on September 18
Rank Precipitation Year
1 2.1 inches 1986
2 1.4 inches 1968
3 0.7 inches 2018
4 0.7 inches 1960
5 0.7 inches 2003
5 0.7 inches 1944
7 0.6 inches 1995
8 0.5 inches 1957
9 0.5 inches 2002
10 0.4 inches 1959
Weather Station Details
Years Station Coordinates
1932–2022 Sioux Falls location