Spearfish, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 40° -32° (1950) 68° (2003) 0.51" NA
February 20° 41° -25° (1989) 75° (1982) 0.74" NA
March 27° 49° -18° (1967) 80° (1978) 1.18" NA
April 37° 59° 1° (1968) 91° (1980) 2.47" NA
May 47° 69° 14° (1954) 96° (2001) 3.88" NA
June 55° 79° 25° (1951) 103° (2002) 3.65" NA
July 62° 88° 35° (1950) 109° (2006) 2.21" NA
August 60° 87° 32° (1985) 104° (1975) 1.64" NA
September 50° 76° 20° (1972) 105° (1978) 1.78" NA
October 39° 62° -2° (1991) 91° (1975) 2.05" NA
November 28° 49° -23° (1959) 78° (1999) 1.19" NA
December 19° 40° -31° (1983) 70° (1997) 0.61" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 60° 85° 41° (1951) 104° (1990) 0.07" NA
Jul 2 60° 85° 41° (1968) 103° (1990) 0.06" NA
Jul 3 61° 85° 43° (1967) 101° (1961) 0.05" NA
Jul 4 61° 86° 41° (1972) 98° (1988) 0.06" NA
Jul 5 61° 86° 42° (1950) 105° (1989) 0.07" NA
Jul 6 61° 86° 48° (1960) 99° (2007) 0.06" NA
Jul 7 62° 86° 47° (1952) 105° (1973) 0.06" NA
Jul 8 62° 87° 41° (1952) 101° (1981) 0.06" NA
Jul 9 62° 87° 47° (1959) 106° (1954) 0.07" NA
Jul 10 62° 87° 45° (1951) 104° (1980) 0.06" NA
Jul 11 62° 87° 44° (1951) 101° (1979) 0.06" NA
Jul 12 63° 88° 40° (1987) 103° (1973) 0.07" NA
Jul 13 63° 88° 35° (1950) 101° (2003) 0.07" NA
Jul 14 63° 88° 49° (1948) 103° (1988) 0.07" NA
Jul 15 63° 88° 47° (1979) 109° (2006) 0.07" NA
Jul 16 63° 88° 47° (1950) 105° (2005) 0.07" NA
Jul 17 63° 88° 44° (1982) 102° (1977) 0.07" NA
Jul 18 63° 88° 49° (1982) 103° (2004) 0.08" NA
Jul 19 63° 88° 47° (1950) 103° (2004) 0.07" NA
Jul 20 63° 88° 47° (1972) 104° (1960) 0.08" NA
Jul 21 63° 89° 47° (1950) 101° (1960) 0.08" NA
Jul 22 63° 89° 44° (1961) 98° (1964) 0.07" NA
Jul 23 63° 89° 42° (1952) 102° (1960) 0.08" NA
Jul 24 63° 89° 49° (1970) 103° (1952) 0.08" NA
Jul 25 63° 89° 46° (1950) 101° (2007) 0.08" NA
Jul 26 63° 89° 40° (1971) 105° (1987) 0.08" NA
Jul 27 63° 89° 47° (1971) 101° (2006) 0.08" NA
Jul 28 63° 89° 44° (1971) 109° (2006) 0.09" NA
Jul 29 63° 89° 46° (1950) 104° (1975) 0.08" NA
Jul 30 63° 89° 43° (1971) 104° (2006) 0.08" NA
Jul 31 63° 89° 46° (1968) 102° (2006) 0.08" NA
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