Stephan, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -36° (1982) 65° (1987) 0.41" NA
February 31° -40° (1994) 72° (2000) 0.5" NA
March 18° 43° -25° (1960) 85° (1988) 1.31" NA
April 31° 58° -1° (1975) 99° (1980) 1.98" NA
May 43° 70° 13° (1967) 103° (1969) 2.95" NA
June 53° 80° 29° (1964) 110° (1988) 2.95" NA
July 58° 87° 32° (1964) 111° (2006) 2.62" NA
August 56° 85° 31° (1986) 112° (1965) 2.07" NA
September 46° 75° 17° (1974) 107° (1983) 1.77" NA
October 32° 61° 2° (1991) 95° (1997) 1.75" NA
November 17° 41° -22° (1959) 82° (1999) 0.65" NA
December 28° -32° (1990) 70° (1998) 0.41" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 10° 33° -16° (1960) 70° (1998) 0.01" NA
Dec 2 10° 32° -18° (1985) 70° (1998) 0.01" NA
Dec 3 32° -13° (1985) 56° (1998) 0.01" NA
Dec 4 32° -10° (1984) 66° (1975) 0.01" NA
Dec 5 31° -13° (1972) 59° (1988) 0.01" NA
Dec 6 31° -22° (1972) 55° (1963) 0.01" NA
Dec 7 30° -14° (1972) 54° (1965) 0.01" NA
Dec 8 30° -17° (1976) 55° (1990) 0.01" NA
Dec 9 30° -21° (1977) 61° (1990) 0.01" NA
Dec 10 30° -16° (1966) 58° (2006) 0.01" NA
Dec 11 29° -19° (1962) 55° (1967) 0.01" NA
Dec 12 29° -21° (1962) 52° (2004) 0.01" NA
Dec 13 29° -20° (1985) 50° (1988) 0.01" NA
Dec 14 28° -22° (1961) 63° (1998) 0.01" NA
Dec 15 28° -22° (1963) 56° (1959) 0.01" NA
Dec 16 28° -20° (1964) 63° (1962) 0.01" NA
Dec 17 28° -20° (1964) 56° (1982) 0.01" NA
Dec 18 27° -25° (1963) 60° (1979) 0.01" NA
Dec 19 27° -21° (1989) 55° (1979) 0.01" NA
Dec 20 27° -21° (1989) 56° (1979) 0.01" NA
Dec 21 27° -32° (1983) 54° (1979) 0.01" NA
Dec 22 26° -29° (1989) 58° (1982) 0.02" NA
Dec 23 26° -32° (1983) 48° (1979) 0.02" NA
Dec 24 26° -27° (1983) 48° (1986) 0.02" NA
Dec 25 26° -23° (2000) 46° (1999) 0.02" NA
Dec 26 26° -23° (1996) 53° (1999) 0.02" NA
Dec 27 26° -13° (1967) 50° (1986) 0.02" NA
Dec 28 25° -14° (1996) 49° (1974) 0.02" NA
Dec 29 25° -23° (1990) 55° (1999) 0.02" NA
Dec 30 25° -32° (1990) 57° (1999) 0.02" NA
Dec 31 25° -27° (1967) 57° (2004) 0.02" NA
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