Rapid City October 20 Weather Records

Daily averages and all-time records for weather in Rapid City, South Dakota for the date of October 20.
October 20 All-Time Records
1948–2024
Highest temperature 84 °F 2017
Lowest temperature 19 °F 1987
Lowest daily high 35 °F 1949
Highest daily low 48 °F 2003
Most precipitation 0.56 inches 2019
Most snow 1.5 inches 2006
October 20 Average Weather
1991–2020 1
Average high 59.2 °F
Average low 32.2 °F
Chance precipitation 21.7%
Chance snow 5.5%
Rapid City October 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 77 46 0.00 n/a
2022 81 36 0.00 n/a
2021 40 26 0.19 n/a
2020 51 33 0.00 n/a
2019 48 32 0.56 n/a
2018 61 30 0.00 0.0
2017 84 43 0.00 0.0
2016 60 27 0.00 0.0
2015 71 41 0.00 0.0
2014 77 38 0.00 0.0
2013 53 35 0.04 0.0
2012 80 36 0.00 0.0
2011 64 25 0.00 0.0
2010 70 34 0.00 0.0
2009 43 36 0.36 0.0
2008 57 37 0.00 0.0
2007 60 41 0.03 0.0
2006 48 28 0.27 1.5
2005 65 39 0.00 n/a
2004 65 39 0.00 n/a
2003 76 48 0.00 n/a
2002 63 28 0.00 n/a
2001 59 40 0.03 n/a
2000 71 36 0.00 0.0
1999 75 29 0.00 0.0
1998 57 33 0.00 0.0
1997 46 26 0.00 0.0
1996 44 31 0.00 n/a
1995 56 28 0.00 0.0
1994 67 35 0.00 0.0
1993 55 27 0.00 0.0
1992 79 36 0.00 0.0
1991 69 28 0.00 0.0
1990 47 27 0.00 0.0
1989 71 37 0.00 0.0
1988 65 41 0.00 0.0
1987 42 19 0.00 0.0
1986 68 46 0.00 0.0
1985 78 37 0.00 0.0
1984 45 19 0.00 0.0
1983 61 30 0.00 0.0
1982 53 21 0.00 0.0
1981 46 32 0.12 1.2
1980 70 40 0.00 0.0
1979 56 42 0.03 0.0
1978 81 41 0.00 0.0
1977 71 43 0.00 0.0
1976 49 27 0.00 0.0
1975 67 40 0.00 0.0
1974 77 36 0.00 0.0
1973 79 46 0.00 0.0
1972 57 34 0.00 0.0
1971 67 33 0.00 0.0
1970 67 35 0.00 0.0
1969 65 29 0.00 0.0
1968 80 34 0.00 0.0
1967 61 27 0.00 0.0
1966 76 34 0.00 0.0
1965 56 35 0.00 0.0
1964 77 45 0.00 0.0
1963 56 47 0.42 0.0
1962 68 32 0.00 0.0
1961 77 43 0.00 0.0
1960 61 28 0.00 0.0
1959 46 30 0.00 0.0
1958 67 40 0.00 0.0
1957 45 38 0.09 0.0
1956 68 35 0.00 0.0
1955 52 38 0.00 0.0
1954 62 41 0.00 0.0
1953 71 48 0.07 0.0
1952 65 32 0.00 0.0
1951 40 31 0.04 0.1
1950 81 41 0.00 0.0
1949 35 24 0.03 0.3
1948 66 36 0.00 0.0
What's the all-time high for Rapid City on 10/20?
For the date of Oct 20, the highest temperature ever reached in Rapid City history is 84 °F which happened in 2017.
Highest Temperatures in Rapid City on October 20
Rank Temperature Year
1 84 °F 2017
2 81 °F 1978
2 81 °F 2022
2 81 °F 1950
5 80 °F 1968
5 80 °F 2012
7 79 °F 1973
7 79 °F 1992
9 78 °F 1985
10 77 °F 2014
10 77 °F 1961
10 77 °F 1974
10 77 °F 1964
10 77 °F 2023
What's the all-time low for Rapid City on 10/20?
For the date of Oct 20, the lowest temperature ever reached in Rapid City history is 19 °F which has happened 2 times, most recently in 1987.
Lowest Temperatures in Rapid City on October 20
Rank Temperature Year
1 19 °F 1987
1 19 °F 1984
3 21 °F 1982
4 24 °F 1949
5 25 °F 2011
6 26 °F 1997
6 26 °F 2021
8 27 °F 1967
8 27 °F 2016
8 27 °F 1993
8 27 °F 1976
8 27 °F 1990
Lowest High Temperatures in Rapid City on October 20
Rank Temperature Year
1 35 °F 1949
2 40 °F 1951
2 40 °F 2021
4 42 °F 1987
5 43 °F 2009
6 44 °F 1996
7 45 °F 1957
7 45 °F 1984
9 46 °F 1997
9 46 °F 1959
9 46 °F 1981
What's the most it has ever rained in Rapid City on 10/20?
For the date of Oct 20, the most precipitation ever recorded in Rapid City history is 0.56 inches which happened in 2019.
All-Time Most Precipitation in Rapid City on October 20
Rank Precipitation Year
1 0.56 inches 2019
2 0.42 inches 1963
3 0.36 inches 2009
4 0.27 inches 2006
5 0.19 inches 2021
6 0.12 inches 1981
7 0.09 inches 1957
8 0.07 inches 1953
9 0.04 inches 2013
9 0.04 inches 1951
All-Time Most Snow in Rapid City on October 20
Rank Precipitation Year
1 1.5 inches 2006
2 1.2 inches 1981
3 0.3 inches 1949
4 0.1 inches 1951
Weather Station Details
Years Station Coordinates
1948–2024 Rapid City Regional Airport location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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