Rockyford, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 35° -28° (1968) 67° (2002) 0.39" NA
February 16° 41° -31° (1996) 70° (1995) 0.46" NA
March 25° 48° -18° (1998) 82° (1995) 1.32" NA
April 34° 58° 2° (2002) 93° (1992) 2.2" NA
May 44° 68° 20° (2002) 95° (1992) 3.16" NA
June 54° 79° 33° (1995) 107° (2002) 3.18" NA
July 59° 87° 38° (1995) 110° (1990) 2.58" NA
August 58° 87° 37° (1992) 107° (2002) 1.87" NA
September 47° 77° 19° (1993) 102° (2001) 1.51" NA
October 35° 64° -8° (1991) 93° (1992) 1.52" NA
November 22° 46° -19° (1991) 83° (1999) 0.7" NA
December 14° 38° -37° (1989) 69° (1995) 0.41" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 17° 41° 2° (1991) 68° (1999) 0.02" NA
Dec 2 16° 40° 0° (1991) 69° (1995) 0.02" NA
Dec 3 16° 40° 8° (1991) 68° (1998) 0.02" NA
Dec 4 16° 40° -8° (1992) 61° (1994) 0.02" NA
Dec 5 16° 40° -5° (1992) 63° (1995) 0.02" NA
Dec 6 16° 40° -12° (1977) 52° (1989) 0.02" NA
Dec 7 15° 39° 6° (1977) 59° (2003) 0.02" NA
Dec 8 15° 39° -6° (1977) 62° (2003) 0.02" NA
Dec 9 15° 39° -20° (1977) 56° (1990) 0.02" NA
Dec 10 15° 39° -5° (1995) 64° (1990) 0.02" NA
Dec 11 14° 38° -15° (2000) 68° (1990) 0.01" NA
Dec 12 14° 38° -14° (2000) 65° (1990) 0.01" NA
Dec 13 14° 38° -13° (2000) 54° (1993) 0.01" NA
Dec 14 14° 38° -1° (2000) 59° (1998) 0.01" NA
Dec 15 14° 38° -30° (1989) 66° (1998) 0.01" NA
Dec 16 13° 38° -22° (1989) 63° (2002) 0.01" NA
Dec 17 13° 37° -10° (1989) 56° (2002) 0.01" NA
Dec 18 13° 37° -14° (1989) 63° (1998) 0.01" NA
Dec 19 13° 37° -15° (1989) 53° (1999) 0.01" NA
Dec 20 13° 37° -21° (2000) 48° (2003) 0.01" NA
Dec 21 13° 37° -18° (1990) 59° (2003) 0.01" NA
Dec 22 12° 36° -37° (1989) 53° (1994) 0.01" NA
Dec 23 12° 36° -30° (1989) 51° (1994) 0.01" NA
Dec 24 12° 36° -13° (1996) 60° (1994) 0.01" NA
Dec 25 12° 36° -15° (1996) 58° (1999) 0.01" NA
Dec 26 12° 36° -23° (1996) 56° (1994) 0.01" NA
Dec 27 12° 36° -7° (1996) 53° (1994) 0.01" NA
Dec 28 12° 35° -1° (1996) 54° (2002) 0.01" NA
Dec 29 11° 35° -24° (1990) 62° (1999) 0.01" NA
Dec 30 11° 35° -28° (1990) 60° (1999) 0.01" NA
Dec 31 11° 35° -19° (1990) 48° (1991) 0.01" NA
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