Rapid City/Ellsworth AFB, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 37° -27° (1950) 76° (1987) 0.3" 4.4"
February 15° 40° -31° (1996) 75° (1995) 0.46" 5.8"
March 23° 48° -21° (1996) 83° (2007) 0.93" 8.7"
April 32° 58° 1° (1975) 93° (1989) 1.8" 7.9"
May 42° 68° 18° (1950) 98° (1969) 3.22" 1.1"
June 51° 78° 31° (1951) 109° (2002) 2.53" 0"
July 58° 87° 39° (1987) 111° (2006) 1.85" 0"
August 57° 86° 38° (1992) 107° (2007) 1.56" 0"
September 46° 76° 18° (1985) 104° (1978) 1.29" 0.2"
October 34° 61° -2° (1991) 94° (2005) 1.42" 1.6"
November 22° 47° -19° (1959) 83° (1999) 0.53" 6"
December 13° 37° -30° (1990) 75° (1965) 0.42" 5.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 16° 40° -14° (1985) 71° (1973) 0.01" 0.2"
Dec 2 15° 39° -19° (1985) 69° (1960) 0.02" 0.2"
Dec 3 15° 39° -6° (2006) 68° (1948) 0.01" 0.1"
Dec 4 15° 39° -5° (2005) 75° (1965) 0.01" 0.2"
Dec 5 14° 38° -22° (1972) 67° (1987) 0.01" 0.2"
Dec 6 14° 38° -20° (1972) 65° (1981) 0.02" 0.2"
Dec 7 14° 38° -12° (1972) 69° (1984) 0.01" 0.2"
Dec 8 14° 38° -23° (1972) 62° (1984) 0.01" 0.1"
Dec 9 14° 37° -19° (1972) 70° (1957) 0.01" 0.2"
Dec 10 13° 37° -14° (1972) 68° (1987) 0.02" 0.2"
Dec 11 13° 37° -19° (2000) 69° (2004) 0.01" 0.2"
Dec 12 13° 37° -19° (2000) 61° (1993) 0.01" 0.2"
Dec 13 13° 37° -15° (1985) 65° (1988) 0.01" 0.1"
Dec 14 13° 37° -25° (1989) 70° (1998) 0.02" 0.2"
Dec 15 13° 36° -22° (1989) 63° (1952) 0.01" 0.2"
Dec 16 12° 36° -20° (1964) 64° (1980) 0.01" 0.2"
Dec 17 12° 36° -23° (1964) 69° (1998) 0.02" 0.1"
Dec 18 12° 36° -20° (1983) 70° (1979) 0.01" 0.2"
Dec 19 12° 36° -17° (1990) 59° (2004) 0.02" 0.2"
Dec 20 12° 36° -20° (1983) 63° (1954) 0.01" 0.2"
Dec 21 12° 36° -25° (1989) 65° (1991) 0.01" 0.1"
Dec 22 12° 36° -29° (1989) 64° (1972) 0.02" 0.2"
Dec 23 12° 36° -27° (1983) 66° (1955) 0.01" 0.2"
Dec 24 12° 36° -26° (1983) 62° (1955) 0.02" 0.1"
Dec 25 12° 36° -21° (1983) 60° (1963) 0.01" 0.2"
Dec 26 12° 36° -23° (1996) 62° (1947) 0.02" 0.2"
Dec 27 12° 36° -10° (1988) 59° (1980) 0.01" 0.2"
Dec 28 12° 36° -17° (1990) 62° (1999) 0.02" 0.1"
Dec 29 12° 36° -29° (1990) 65° (1965) 0.01" 0.2"
Dec 30 12° 36° -30° (1990) 60° (1965) 0.02" 0.1"
Dec 31 12° 36° -19° (1978) 62° (1963) 0.01" 0.2"
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