Keystone, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 33° -38° (1963) 68° (1981) 0.38" 5.1"
February 19° 36° -29° (1989) 68° (1982) 0.55" 6.6"
March 23° 42° -12° (1965) 78° (1968) 1.17" 8.3"
April 31° 50° 1° (1975) 85° (1989) 2.21" 10.1"
May 41° 61° 14° (1967) 93° (1969) 3.95" 1.9"
June 51° 72° 27° (1981) 99° (1970) 3.74" 0.2"
July 58° 79° 35° (1986) 100° (2006) 3.16" 0"
August 58° 77° 33° (1968) 99° (1973) 2.04" 0"
September 49° 67° 19° (1985) 97° (1978) 1.55" 0.7"
October 37° 55° 1° (1991) 84° (1976) 1.58" 2.3"
November 25° 41° -12° (1985) 75° (1975) 0.64" 7.2"
December 18° 34° -31° (1983) 67° (1997) 0.46" 6.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 16° 33° -15° (1979) 60° (1997) 0.02" NA
Jan 2 16° 33° -20° (1968) 55° (1964) 0.02" NA
Jan 3 16° 33° -12° (1976) 54° (2003) 0.01" NA
Jan 4 16° 33° -15° (1973) 58° (2001) 0.01" NA
Jan 5 16° 33° -20° (1979) 56° (1984) 0.01" NA
Jan 6 16° 33° -18° (1968) 54° (2006) 0.01" NA
Jan 7 16° 32° -16° (1976) 64° (2003) 0.01" NA
Jan 8 16° 32° -14° (1976) 63° (2002) 0.01" NA
Jan 9 16° 32° -18° (1980) 59° (1986) 0.01" NA
Jan 10 16° 32° -19° (1982) 57° (1995) 0.01" NA
Jan 11 16° 32° -22° (1963) 59° (1986) 0.01" NA
Jan 12 16° 32° -18° (1963) 65° (1987) 0.01" NA
Jan 13 16° 32° -13° (1972) 61° (1987) 0.01" NA
Jan 14 16° 32° -22° (1972) 62° (1986) 0.01" NA
Jan 15 16° 32° -16° (1972) 63° (1973) 0.01" NA
Jan 16 16° 32° -12° (1982) 63° (1974) 0.01" NA
Jan 17 16° 32° -14° (1970) 59° (1974) 0.01" NA
Jan 18 16° 33° -15° (1984) 57° (1965) 0.01" NA
Jan 19 16° 33° -38° (1963) 59° (1986) 0.01" NA
Jan 20 16° 33° -14° (1966) 58° (1986) 0.01" NA
Jan 21 16° 33° -15° (1966) 56° (1981) 0.01" NA
Jan 22 16° 33° -9° (1963) 60° (1981) 0.01" NA
Jan 23 16° 33° -20° (1963) 68° (1981) 0.01" NA
Jan 24 16° 33° -11° (1969) 64° (2005) 0.01" NA
Jan 25 16° 33° -18° (1972) 60° (1973) 0.01" NA
Jan 26 16° 33° -22° (1972) 57° (1982) 0.01" NA
Jan 27 16° 33° -23° (1972) 54° (1986) 0.02" NA
Jan 28 16° 33° -15° (1966) 61° (1988) 0.02" NA
Jan 29 17° 33° -19° (1996) 54° (1976) 0.02" NA
Jan 30 17° 34° -19° (1996) 58° (1989) 0.02" NA
Jan 31 17° 34° -15° (1985) 63° (1989) 0.02" NA
Advertisements
Track Severe Weather on mobile