Can't find what you're looking for? We're happy to answer your questions.

Rapid City September 18 Weather Records

Daily averages and all-time records for weather in Rapid City, South Dakota for the date of September 18.
September 18 All-Time Records
1948–2022
Highest temperature 97 °F 1998
Lowest temperature 24 °F 1991
Lowest daily high 44 °F 2010
Highest daily low 64 °F 2000
Most precipitation 0.6 inches 2002
Most snow none -
September 18 Average Weather
1991–2020 1
Average high 75.3 °F
Average low 45.6 °F
Chance precipitation 21.7%
Chance snow 0.3%
Rapid City September 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 85 55 0.00 n/a
2021 96 49 0.00 n/a
2020 75 41 0.00 n/a
2019 76 48 0.00 n/a
2018 73 51 0.00 0.0
2017 82 40 0.00 0.0
2016 85 45 0.00 0.0
2015 62 42 0.00 0.0
2014 92 48 0.00 0.0
2013 93 56 0.00 0.0
2012 84 40 0.00 0.0
2011 73 41 0.00 0.0
2010 44 36 0.02 0.0
2009 85 48 0.00 0.0
2008 91 53 0.01 0.0
2007 68 46 0.03 0.0
2006 53 33 0.00 0.0
2005 72 47 0.00 n/a
2004 96 55 0.00 n/a
2003 59 33 0.00 n/a
2002 65 51 0.57 n/a
2001 72 49 0.12 n/a
2000 93 64 0.00 0.0
1999 74 48 0.17 0.0
1998 97 56 0.00 0.0
1997 75 53 0.00 0.0
1996 59 45 0.37 0.0
1995 58 41 0.19 0.0
1994 89 48 0.00 0.0
1993 50 46 0.41 0.0
1992 63 32 0.00 0.0
1991 55 24 0.00 0.0
1990 74 52 0.00 0.0
1989 84 56 0.00 0.0
1988 64 42 0.01 0.0
1987 67 37 0.00 0.0
1986 53 49 0.51 0.0
1985 84 48 0.01 0.0
1984 93 58 0.00 0.0
1983 68 38 0.00 0.0
1982 72 38 0.00 0.0
1981 86 37 0.00 0.0
1980 65 48 0.00 0.0
1979 80 48 0.00 0.0
1978 75 47 0.05 0.0
1977 66 40 0.00 0.0
1976 82 58 0.03 0.0
1975 59 42 0.00 0.0
1974 86 50 0.00 0.0
1973 73 34 0.00 0.0
1972 91 47 0.00 0.0
1971 58 36 0.04 0.0
1970 89 47 0.00 0.0
1969 83 50 0.00 0.0
1968 76 43 0.00 0.0
1967 58 50 0.08 0.0
1966 69 44 0.00 0.0
1965 48 32 0.00 0.0
1964 72 49 0.00 0.0
1963 63 54 0.02 0.0
1962 78 49 0.00 0.0
1961 90 57 0.00 0.0
1960 77 41 0.00 0.0
1959 61 42 0.25 0.0
1958 74 54 0.00 0.0
1957 50 34 0.30 0.0
1956 82 54 0.00 0.0
1955 75 56 0.00 0.0
1954 78 49 0.00 0.0
1953 74 41 0.00 0.0
1952 70 53 0.00 0.0
1951 74 49 0.00 0.0
1950 74 52 0.00 0.0
1949 71 41 0.00 0.0
1948 95 57 0.00 0.0
All-Time Highest Temperatures in Rapid City on September 18
Rank Temperature Year
1 97 °F 1998
2 96 °F 2021
2 96 °F 2004
4 95 °F 1948
5 93 °F 1984
5 93 °F 2000
5 93 °F 2013
8 92 °F 2014
9 91 °F 1972
9 91 °F 2008
All-Time Lowest Temperatures in Rapid City on September 18
Rank Temperature Year
1 24 °F 1991
2 32 °F 1992
2 32 °F 1965
4 33 °F 2003
4 33 °F 2006
6 34 °F 1973
6 34 °F 1957
8 36 °F 1971
8 36 °F 2010
10 37 °F 1981
10 37 °F 1987
Lowest High Temperatures in Rapid City on September 18
Rank Temperature Year
1 44 °F 2010
2 48 °F 1965
3 50 °F 1957
3 50 °F 1993
5 53 °F 2006
5 53 °F 1986
7 55 °F 1991
8 58 °F 1995
8 58 °F 1971
8 58 °F 1967
All-Time Most Precipitation in Rapid City on September 18
Rank Precipitation Year
1 0.6 inches 2002
2 0.5 inches 1986
3 0.4 inches 1993
4 0.4 inches 1996
5 0.3 inches 1957
6 0.3 inches 1959
7 0.2 inches 1995
8 0.2 inches 1999
9 0.1 inches 2001
10 0.1 inches 1967
Weather Station Details
Years Station Coordinates
1948–2022 Rapid City Regional Airport location