Iron Mountain, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 32° -37° (1988) 70° (1974) 0.39" 4.8"
February 14° 37° -38° (1994) 75° (2000) 0.5" 6.1"
March 23° 48° -28° (1960) 89° (1988) 1.26" 8"
April 34° 62° -5° (1975) 99° (1992) 2.16" 3.9"
May 46° 73° 15° (1981) 102° (1969) 3.16" 0.2"
June 56° 82° 28° (1969) 111° (1988) 3.35" 0"
July 62° 90° 35° (1971) 113° (1966) 2.49" 0"
August 60° 88° 34° (1950) 114° (1965) 1.93" 0"
September 49° 79° 20° (1984) 108° (1983) 1.77" 0.1"
October 36° 64° 5° (1991) 99° (1963) 1.54" 0.8"
November 23° 46° -23° (1959) 89° (1999) 0.72" 6.3"
December 11° 33° -31° (1983) 74° (1998) 0.38" 6.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 62° 90° 44° (1948) 110° (1955) 0.07" 0"
Aug 2 62° 90° 45° (1950) 108° (1955) 0.08" 0"
Aug 3 62° 90° 40° (1978) 111° (1980) 0.08" 0"
Aug 4 62° 90° 38° (1974) 107° (1980) 0.07" 0"
Aug 5 62° 90° 43° (1994) 104° (1949) 0.07" 0"
Aug 6 62° 90° 46° (1993) 112° (1980) 0.07" 0"
Aug 7 62° 90° 41° (1989) 109° (1980) 0.07" 0"
Aug 8 62° 90° 45° (1989) 102° (1949) 0.06" 0"
Aug 9 62° 90° 43° (1966) 103° (1958) 0.07" 0"
Aug 10 61° 90° 40° (1985) 102° (1969) 0.06" 0"
Aug 11 61° 89° 43° (2004) 110° (1959) 0.06" 0"
Aug 12 61° 89° 47° (1992) 106° (1949) 0.06" 0"
Aug 13 61° 89° 46° (1990) 114° (1965) 0.05" 0"
Aug 14 61° 89° 42° (1963) 103° (1952) 0.06" 0"
Aug 15 61° 89° 46° (1994) 111° (1988) 0.06" 0"
Aug 16 60° 89° 45° (1962) 106° (1969) 0.06" 0"
Aug 17 60° 89° 46° (1963) 107° (1973) 0.06" 0"
Aug 18 60° 88° 43° (1966) 109° (1959) 0.06" 0"
Aug 19 60° 88° 36° (2004) 105° (1948) 0.06" 0"
Aug 20 60° 88° 34° (1950) 107° (1976) 0.06" 0"
Aug 21 59° 88° 39° (1986) 104° (1976) 0.06" 0"
Aug 22 59° 88° 44° (1974) 108° (1971) 0.06" 0"
Aug 23 59° 87° 41° (1966) 108° (1971) 0.05" 0"
Aug 24 59° 87° 42° (1966) 105° (2003) 0.06" 0"
Aug 25 58° 87° 44° (1968) 107° (1991) 0.05" 0"
Aug 26 58° 87° 43° (1959) 110° (1976) 0.06" 0"
Aug 27 58° 86° 41° (1980) 108° (1973) 0.06" 0"
Aug 28 57° 86° 36° (1986) 105° (1959) 0.06" 0"
Aug 29 57° 86° 44° (1988) 105° (1969) 0.06" 0"
Aug 30 57° 86° 40° (1992) 105° (2000) 0.06" 0"
Aug 31 56° 85° 35° (1958) 105° (2000) 0.06" 0"
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