Fort Thompson, 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
Jan 1 25° -25° (1974) 60° (1998) 0.02" NA
Jan 2 25° -22° (1974) 63° (1998) 0.02" NA
Jan 3 25° -26° (1968) 63° (1998) 0.02" NA
Jan 4 25° -26° (1968) 53° (1987) 0.02" NA
Jan 5 25° -28° (1960) 53° (1987) 0.02" NA
Jan 6 25° -21° (1979) 48° (1963) 0.02" NA
Jan 7 25° -24° (1968) 54° (1963) 0.02" NA
Jan 8 24° -22° (1976) 60° (1963) 0.02" NA
Jan 9 24° -28° (1988) 56° (2003) 0.02" NA
Jan 10 24° -36° (1982) 57° (1990) 0.02" NA
Jan 11 24° -24° (1985) 59° (1987) 0.01" NA
Jan 12 24° -19° (1974) 65° (1987) 0.01" NA
Jan 13 24° -21° (1979) 55° (1996) 0.01" NA
Jan 14 24° -30° (1972) 48° (1990) 0.01" NA
Jan 15 25° -31° (1972) 47° (2000) 0.01" NA
Jan 16 25° -26° (1977) 62° (1974) 0.01" NA
Jan 17 25° -20° (1978) 52° (1974) 0.01" NA
Jan 18 25° -26° (1970) 57° (1964) 0.01" NA
Jan 19 25° -34° (1970) 50° (1999) 0.01" NA
Jan 20 25° -29° (1984) 60° (1964) 0.01" NA
Jan 21 25° -25° (1966) 51° (1981) 0.01" NA
Jan 22 25° -22° (1966) 57° (1967) 0.01" NA
Jan 23 25° -27° (1966) 63° (1981) 0.01" NA
Jan 24 25° -28° (1961) 65° (1981) 0.01" NA
Jan 25 25° -23° (1961) 58° (2005) 0.01" NA
Jan 26 26° -19° (1963) 53° (2005) 0.01" NA
Jan 27 26° -29° (1963) 57° (2006) 0.01" NA
Jan 28 26° -25° (1972) 49° (2006) 0.01" NA
Jan 29 26° -32° (1966) 53° (1974) 0.01" NA
Jan 30 26° -25° (1966) 54° (1989) 0.01" NA
Jan 31 27° -25° (1996) 56° (1992) 0.01" NA
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