Cheyenne River Reservation, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -40° (1966) 67° (1981) 0.32" 5.7"
February 13° 33° -32° (1996) 73° (1982) 0.48" 6.4"
March 22° 43° -30° (1980) 85° (1967) 1.09" 7.4"
April 34° 58° 1° (1997) 97° (1980) 1.52" 5.9"
May 45° 68° 18° (1967) 104° (1969) 3.08" 0.2"
June 54° 78° 30° (1969) 111° (2002) 3.34" 0"
July 61° 87° 35° (1971) 114° (2006) 2.68" 0"
August 59° 87° 35° (1977) 111° (1988) 1.85" 0"
September 48° 75° 13° (1984) 106° (1983) 1.49" 0.1"
October 35° 61° -5° (1991) 97° (1963) 1.63" 1.6"
November 22° 43° -18° (1985) 83° (1999) 0.59" 5.8"
December 11° 31° -33° (1967) 72° (1965) 0.41" 6.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 29° -20° (1979) 56° (1964) 0.01" 0.2"
Jan 2 29° -21° (1968) 59° (1998) 0.01" 0.2"
Jan 3 29° -28° (1968) 51° (1992) 0.02" 0.2"
Jan 4 29° -28° (1976) 58° (2003) 0.01" 0.2"
Jan 5 29° -23° (1979) 55° (2008) 0.01" 0.3"
Jan 6 29° -19° (1974) 51° (1992) 0.01" 0.2"
Jan 7 29° -27° (1968) 50° (2003) 0.02" 0.2"
Jan 8 29° -27° (1976) 60° (2003) 0.01" 0.2"
Jan 9 29° -31° (1977) 61° (2002) 0.01" 0.2"
Jan 10 29° -27° (1977) 54° (2001) 0.01" 0.2"
Jan 11 29° -25° (1982) 55° (1990) 0.01" 0.1"
Jan 12 29° -32° (1964) 64° (1987) 0.01" 0.2"
Jan 13 29° -20° (1964) 64° (1987) 0.01" 0.2"
Jan 14 29° -29° (1972) 56° (1996) 0.01" 0.2"
Jan 15 29° -26° (1972) 59° (2006) 0.01" 0.2"
Jan 16 29° -22° (1977) 67° (1974) 0.01" 0.1"
Jan 17 29° -18° (1982) 58° (1974) 0.01" 0.2"
Jan 18 29° -27° (1970) 52° (2000) 0.01" 0.2"
Jan 19 29° -35° (1970) 59° (1974) 0.01" 0.2"
Jan 20 29° -19° (1996) 65° (1964) 0" 0.1"
Jan 21 29° -34° (1966) 57° (1981) 0.01" 0.2"
Jan 22 30° -21° (1966) 65° (1981) 0.01" 0.1"
Jan 23 30° -24° (1966) 67° (1981) 0.01" 0.2"
Jan 24 30° -17° (1969) 64° (1981) 0.01" 0.2"
Jan 25 10° 30° -26° (1966) 65° (2005) 0.01" 0.1"
Jan 26 10° 30° -20° (1966) 59° (2002) 0.01" 0.2"
Jan 27 10° 30° -23° (1972) 56° (2006) 0.01" 0.2"
Jan 28 10° 30° -34° (1972) 53° (1984) 0.01" 0.1"
Jan 29 10° 30° -40° (1966) 55° (1974) 0.01" 0.2"
Jan 30 10° 30° -26° (1996) 55° (1988) 0.01" 0.2"
Jan 31 10° 31° -24° (1996) 62° (1989) 0.01" 0.2"
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