Rapid City, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 34° -25° (1979) 73° (1987) 0.29" 4.2"
February 14° 38° -28° (1996) 78° (1988) 0.36" 5.9"
March 21° 45° -19° (1996) 81° (1986) 0.9" 9.1"
April 31° 55° 0° (1975) 90° (1980) 1.97" 5.3"
May 42° 65° 19° (1954) 99° (1969) 3.46" 0.7"
June 52° 75° 32° (1998) 105° (1974) 3.04" 0.1"
July 58° 83° 40° (1959) 107° (1981) 2.71" 0"
August 55° 82° 38° (1992) 104° (1974) 2.09" 0"
September 45° 73° 21° (1972) 103° (1960) 1.23" 0.1"
October 34° 61° -3° (1991) 92° (1975) 1.57" 1.4"
November 21° 44° -17° (1985) 83° (1999) 0.53" 3.7"
December 13° 37° -29° (1989) 74° (1979) 0.3" 5.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 37° 60° 23° (1950) 89° (1992) 0.09" NA
May 2 37° 60° 23° (1990) 83° (1952) 0.1" NA
May 3 37° 60° 19° (1954) 88° (1952) 0.1" NA
May 4 38° 61° 23° (2005) 91° (1986) 0.1" NA
May 5 38° 61° 27° (1991) 83° (1986) 0.1" NA
May 6 39° 61° 27° (1989) 93° (2000) 0.1" NA
May 7 39° 62° 27° (1989) 88° (1963) 0.11" NA
May 8 39° 62° 27° (1980) 88° (1992) 0.11" NA
May 9 40° 62° 30° (1979) 83° (1962) 0.11" NA
May 10 40° 63° 26° (1990) 90° (1961) 0.11" NA
May 11 40° 63° 24° (1979) 86° (1961) 0.11" NA
May 12 41° 63° 23° (1953) 88° (1960) 0.11" NA
May 13 41° 64° 24° (1953) 88° (1955) 0.11" NA
May 14 41° 64° 26° (1983) 94° (2001) 0.11" NA
May 15 42° 64° 32° (2005) 89° (1978) 0.11" NA
May 16 42° 65° 32° (2005) 90° (1979) 0.12" NA
May 17 42° 65° 29° (2004) 92° (1988) 0.12" NA
May 18 43° 65° 32° (1983) 87° (1988) 0.12" NA
May 19 43° 66° 33° (1997) 92° (1992) 0.12" NA
May 20 44° 66° 30° (1968) 92° (1992) 0.12" NA
May 21 44° 67° 28° (1974) 92° (1966) 0.12" NA
May 22 44° 67° 30° (1963) 88° (1966) 0.12" NA
May 23 45° 67° 33° (1974) 89° (1984) 0.12" NA
May 24 45° 68° 27° (2002) 89° (1984) 0.12" NA
May 25 45° 68° 33° (1975) 85° (1966) 0.12" NA
May 26 46° 68° 31° (1984) 96° (1969) 0.12" NA
May 27 46° 69° 36° (1992) 99° (1969) 0.12" NA
May 28 46° 69° 34° (1984) 89° (1951) 0.11" NA
May 29 47° 69° 33° (1982) 88° (1988) 0.11" NA
May 30 47° 70° 31° (1983) 89° (1969) 0.11" NA
May 31 47° 70° 32° (1982) 90° (1960) 0.11" NA
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