Opal, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -32° (1985) 69° (2005) 0.57" NA
February 12° 34° -36° (1994) 72° (2005) 0.65" NA
March 20° 43° -26° (1998) 83° (2007) 1.47" NA
April 31° 57° -2° (1997) 93° (1989) 2.03" NA
May 43° 68° 18° (2005) 101° (2006) 2.75" NA
June 52° 79° 30° (1979) 110° (2002) 2.9" NA
July 58° 87° 39° (1983) 114° (1977) 2.24" NA
August 55° 86° 35° (1992) 110° (1988) 1.36" NA
September 44° 75° 20° (1995) 107° (2001) 0.96" NA
October 31° 61° -10° (1991) 95° (1997) 1.35" NA
November 19° 42° -24° (1985) 82° (1999) 0.75" NA
December 31° -36° (1990) 69° (1998) 0.78" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 12° 34° -13° (1985) 63° (1995) 0.02" NA
Dec 2 12° 34° -26° (1985) 69° (1998) 0.02" NA
Dec 3 12° 34° -14° (2006) 59° (1988) 0.02" NA
Dec 4 11° 34° -13° (2006) 67° (1979) 0.02" NA
Dec 5 11° 33° -9° (1977) 62° (1995) 0.02" NA
Dec 6 11° 33° -17° (1977) 63° (1987) 0.02" NA
Dec 7 10° 33° -18° (2006) 60° (1991) 0.02" NA
Dec 8 10° 32° -13° (1977) 55° (1990) 0.03" NA
Dec 9 10° 32° -26° (1977) 65° (1979) 0.03" NA
Dec 10 32° -25° (1977) 66° (1979) 0.03" NA
Dec 11 32° -12° (1989) 66° (1990) 0.03" NA
Dec 12 31° -17° (2000) 64° (2004) 0.03" NA
Dec 13 31° -22° (1985) 53° (1998) 0.03" NA
Dec 14 31° -9° (1985) 65° (1988) 0.03" NA
Dec 15 31° -25° (1989) 63° (1997) 0.03" NA
Dec 16 30° -23° (1979) 59° (1980) 0.03" NA
Dec 17 30° -20° (1975) 54° (2002) 0.03" NA
Dec 18 30° -21° (1983) 62° (1979) 0.03" NA
Dec 19 30° -18° (1989) 59° (1988) 0.03" NA
Dec 20 29° -21° (1990) 54° (2004) 0.03" NA
Dec 21 29° -29° (1989) 57° (2003) 0.03" NA
Dec 22 29° -34° (1989) 53° (1991) 0.03" NA
Dec 23 29° -33° (1989) 54° (1986) 0.03" NA
Dec 24 29° -30° (1983) 49° (1986) 0.02" NA
Dec 25 28° -27° (1983) 54° (1999) 0.02" NA
Dec 26 28° -27° (1996) 53° (1999) 0.02" NA
Dec 27 28° -25° (1996) 53° (1976) 0.02" NA
Dec 28 28° -19° (1978) 52° (1980) 0.02" NA
Dec 29 28° -25° (1990) 57° (1999) 0.02" NA
Dec 30 27° -36° (1990) 55° (1999) 0.02" NA
Dec 31 27° -32° (1990) 52° (1999) 0.02" NA
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