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Rapid City April 21 Weather Records

Daily averages and all-time records for weather in Rapid City, South Dakota for the date of April 21.
April 21 All-Time Records
1948–2022
Highest temperature 92 °F 1980
Lowest temperature 14 °F 1959
Lowest daily high 33 °F 1951
Highest daily low 50 °F 1989
Most precipitation 0.9 inches 2005
Most snow 2.1 inches 1968
April 21 Average Weather
1991–2020 1
Average high 58.9 °F
Average low 32.9 °F
Chance precipitation 35.2%
Chance snow 11.4%
Rapid City April 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 72 20 0.00 n/a
2021 46 18 0.00 n/a
2020 75 30 0.00 n/a
2019 53 41 0.15 n/a
2018 55 36 0.00 0.0
2017 60 34 0.00 0.0
2016 67 40 0.00 0.0
2015 56 25 0.00 0.0
2014 68 34 0.00 0.0
2013 49 31 0.26 0.6
2012 65 35 0.00 0.0
2011 65 40 0.22 0.0
2010 63 35 0.00 0.0
2009 74 36 0.00 0.0
2008 47 22 0.00 0.0
2007 65 45 0.25 0.0
2006 63 29 0.00 0.0
2005 46 37 0.88 n/a
2004 61 36 0.17 n/a
2003 67 34 0.00 n/a
2002 45 28 0.03 n/a
2001 42 32 0.42 n/a
2000 56 29 0.00 0.0
1999 47 40 0.29 0.0
1998 64 32 0.00 n/a
1997 58 41 0.05 n/a
1996 49 28 0.02 n/a
1995 51 32 0.01 0.0
1994 67 36 0.00 0.0
1993 66 24 0.00 0.0
1992 51 27 0.00 0.0
1991 61 31 0.00 0.0
1990 82 46 0.00 0.0
1989 88 50 0.00 0.0
1988 37 29 0.01 0.0
1987 61 29 0.00 0.0
1986 61 32 0.00 0.0
1985 63 37 0.00 0.0
1984 57 33 0.00 0.0
1983 55 36 0.00 0.0
1982 56 28 0.00 0.0
1981 68 41 0.16 0.0
1980 92 46 0.00 0.0
1979 66 31 0.00 0.0
1978 57 29 0.00 0.0
1977 68 34 0.00 0.0
1976 56 32 0.00 0.0
1975 60 33 0.00 0.0
1974 54 35 0.00 0.0
1973 51 30 0.00 0.0
1972 64 27 0.00 0.0
1971 55 43 0.15 0.0
1970 41 20 0.00 0.0
1969 67 35 0.00 0.0
1968 50 33 0.40 2.1
1967 37 23 0.00 0.0
1966 46 18 0.00 0.0
1965 76 40 0.00 0.0
1964 60 37 0.03 0.0
1963 34 27 0.14 1.4
1962 58 40 0.00 0.0
1961 60 36 0.00 0.0
1960 71 42 0.00 0.0
1959 42 14 0.00 0.0
1958 51 37 0.11 0.0
1957 70 37 0.00 0.0
1956 59 34 0.00 0.0
1955 69 36 0.00 0.0
1954 48 27 0.00 0.0
1953 75 45 0.00 0.0
1952 56 40 0.00 0.0
1951 33 18 0.02 0.2
1950 70 33 0.00 0.0
1949 60 38 0.00 0.0
All-Time Highest Temperatures in Rapid City on April 21
Rank Temperature Year
1 92 °F 1980
2 88 °F 1989
3 82 °F 1990
4 76 °F 1965
5 75 °F 1953
5 75 °F 2020
7 74 °F 2009
8 72 °F 2022
9 71 °F 1960
10 70 °F 1957
10 70 °F 1950
All-Time Lowest Temperatures in Rapid City on April 21
Rank Temperature Year
1 14 °F 1959
2 18 °F 1966
2 18 °F 1951
4 18 °F 2021
5 20 °F 1970
6 20 °F 2022
7 22 °F 2008
8 23 °F 1967
9 24 °F 1993
10 25 °F 2015
Lowest High Temperatures in Rapid City on April 21
Rank Temperature Year
1 33 °F 1951
2 34 °F 1963
3 37 °F 1967
3 37 °F 1988
5 41 °F 1970
6 42 °F 1959
6 42 °F 2001
8 45 °F 2002
9 46 °F 2021
9 46 °F 1966
9 46 °F 2005
All-Time Most Precipitation in Rapid City on April 21
Rank Precipitation Year
1 0.9 inches 2005
2 0.4 inches 2001
3 0.4 inches 1968
4 0.3 inches 1999
5 0.3 inches 2013
6 0.3 inches 2007
7 0.2 inches 2011
8 0.2 inches 2004
9 0.2 inches 1981
10 0.1 inches 2019
10 0.1 inches 1971
All-Time Most Snow in Rapid City on April 21
Rank Precipitation Year
1 2.1 inches 1968
2 1.4 inches 1963
3 0.6 inches 2013
4 0.2 inches 1951
Weather Station Details
Years Station Coordinates
1948–2022 Rapid City Regional Airport location