Sweeney, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 30° -33° (1988) 67° (1981) 0.31" NA
February 13° 36° -37° (1994) 74° (1992) 0.43" NA
March 22° 47° -23° (1998) 88° (1988) 1.36" NA
April 33° 61° 3° (1997) 98° (1992) 2.06" NA
May 44° 72° 12° (1981) 97° (1992) 3.31" NA
June 54° 82° 31° (1998) 109° (1988) 3.51" NA
July 59° 89° 38° (1981) 117° (2006) 2.69" NA
August 58° 89° 35° (1978) 110° (1988) 2.28" NA
September 47° 78° 18° (1984) 107° (2001) 1.49" NA
October 35° 64° 1° (1991) 97° (1997) 1.51" NA
November 20° 44° -16° (1985) 87° (1999) 0.55" NA
December 10° 33° -31° (1990) 73° (1998) 0.32" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 53° 84° 32° (1981) 104° (1983) 0.06" NA
Sep 2 53° 84° 40° (1980) 107° (1983) 0.06" NA
Sep 3 52° 83° 41° (1993) 103° (1983) 0.06" NA
Sep 4 52° 83° 39° (1980) 107° (2001) 0.05" NA
Sep 5 51° 83° 41° (1988) 105° (1978) 0.05" NA
Sep 6 51° 82° 42° (1993) 104° (2002) 0.05" NA
Sep 7 51° 82° 35° (1986) 100° (1978) 0.05" NA
Sep 8 50° 81° 36° (1992) 103° (1977) 0.05" NA
Sep 9 50° 81° 33° (1976) 100° (1979) 0.05" NA
Sep 10 49° 80° 32° (1976) 101° (1998) 0.05" NA
Sep 11 49° 80° 31° (1989) 100° (1998) 0.05" NA
Sep 12 48° 80° 35° (1989) 104° (2004) 0.05" NA
Sep 13 48° 79° 33° (1979) 99° (2004) 0.05" NA
Sep 14 48° 79° 27° (1993) 94° (2006) 0.05" NA
Sep 15 47° 78° 30° (1979) 95° (1995) 0.05" NA
Sep 16 47° 78° 32° (1981) 96° (1979) 0.05" NA
Sep 17 47° 78° 25° (1981) 98° (1989) 0.05" NA
Sep 18 46° 77° 31° (1991) 99° (1998) 0.05" NA
Sep 19 46° 77° 26° (1991) 99° (1984) 0.04" NA
Sep 20 45° 76° 31° (1982) 95° (1984) 0.04" NA
Sep 21 45° 76° 28° (1983) 95° (1984) 0.04" NA
Sep 22 45° 76° 22° (1983) 88° (1979) 0.04" NA
Sep 23 44° 75° 27° (1983) 88° (1992) 0.05" NA
Sep 24 44° 75° 25° (2000) 92° (1990) 0.05" NA
Sep 25 43° 74° 28° (1982) 90° (1979) 0.05" NA
Sep 26 43° 74° 22° (1984) 95° (1979) 0.05" NA
Sep 27 43° 73° 29° (1984) 95° (1983) 0.05" NA
Sep 28 42° 73° 22° (1976) 93° (1981) 0.05" NA
Sep 29 42° 73° 19° (1984) 91° (1981) 0.05" NA
Sep 30 42° 72° 18° (1984) 94° (1989) 0.05" NA
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