Rapid City, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -12° -31.7° (1979) 22.8° (1987) 0.29" 4.2"
February -10° -33.3° (1996) 25.6° (1988) 0.36" 5.9"
March -6° -28.3° (1996) 27.2° (1986) 0.9" 9.1"
April -1° 13° -17.8° (1975) 32.2° (1980) 1.97" 5.3"
May 18° -7.2° (1954) 37.2° (1969) 3.46" 0.7"
June 11° 24° 0° (1998) 40.6° (1974) 3.04" 0.1"
July 14° 28° 4.4° (1959) 41.7° (1981) 2.71" 0"
August 13° 28° 3.3° (1992) 40° (1974) 2.09" 0"
September 23° -6.1° (1972) 39.4° (1960) 1.23" 0.1"
October 16° -19.4° (1991) 33.3° (1975) 1.57" 1.4"
November -6° -27.2° (1985) 28.3° (1999) 0.53" 3.7"
December -11° -33.9° (1989) 23.3° (1979) 0.3" 5.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 14.4° 28.9° 9° (1968) 38° (1955) 0.08" NA
Aug 2 14.4° 28.9° 9° (1978) 37° (1961) 0.08" NA
Aug 3 14.4° 28.9° 4° (1978) 37° (1955) 0.08" NA
Aug 4 14.4° 28.9° 7° (1978) 37° (1961) 0.08" NA
Aug 5 14.4° 28.9° 8° (1980) 38° (2001) 0.08" NA
Aug 6 13.9° 28.9° 11° (1993) 39° (1961) 0.08" NA
Aug 7 13.9° 28.9° 7° (1989) 39° (1975) 0.08" NA
Aug 8 13.9° 28.9° 8° (1989) 39° (1985) 0.08" NA
Aug 9 13.9° 28.9° 10° (1960) 38° (1983) 0.07" NA
Aug 10 13.9° 28.9° 8° (1985) 37° (1965) 0.07" NA
Aug 11 13.9° 28.9° 4° (2004) 39° (1969) 0.07" NA
Aug 12 13.3° 28.9° 4° (2004) 39° (1978) 0.07" NA
Aug 13 13.3° 28.3° 8° (1966) 38.9° (2007) 0.07" NA
Aug 14 13.3° 28.3° 7° (1977) 37.8° (2007) 0.07" NA
Aug 15 13.3° 28.3° 8° (1995) 39° (1988) 0.07" NA
Aug 16 13.3° 28.3° 4° (2004) 37° (1973) 0.07" NA
Aug 17 12.8° 28.3° 6° (2002) 38° (1970) 0.07" NA
Aug 18 12.8° 28.3° 6° (1985) 38° (1959) 0.07" NA
Aug 19 12.8° 27.8° 5° (1978) 40° (1974) 0.07" NA
Aug 20 12.2° 27.8° 6° (1964) 38° (1986) 0.06" NA
Aug 21 12.2° 27.8° 7° (1964) 36° (1962) 0.06" NA
Aug 22 12.2° 27.8° 5° (1966) 39° (1949) 0.06" NA
Aug 23 12.2° 27.2° 7° (1966) 39° (1949) 0.06" NA
Aug 24 11.7° 27.2° 6° (1972) 36° (1953) 0.06" NA
Aug 25 11.7° 27.2° 5° (1972) 36° (1970) 0.06" NA
Aug 26 11.1° 26.7° 6° (1992) 39° (1970) 0.06" NA
Aug 27 11.1° 26.7° 6° (1987) 38° (1973) 0.06" NA
Aug 28 11.1° 26.7° 5° (1977) 37° (1983) 0.05" NA
Aug 29 10.6° 26.1° 5° (1988) 38° (1961) 0.05" NA
Aug 30 10.6° 26.1° 3° (1992) 37° (1981) 0.05" NA
Aug 31 10.6° 26.1° 3° (1992) 39° (1954) 0.05" NA
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