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
Jul 1 59° 84° 45° (1971) 101° (1974) 0.09" 0"
Jul 2 59° 84° 38° (1968) 100° (1975) 0.08" 0"
Jul 3 59° 84° 42° (1972) 102° (1990) 0.09" 0"
Jul 4 59° 85° 38° (1972) 102° (1975) 0.08" 0"
Jul 5 59° 85° 40° (1972) 105° (1989) 0.1" 0"
Jul 6 60° 85° 49° (1972) 107° (1973) 0.09" 0"
Jul 7 60° 85° 51° (2004) 106° (1981) 0.1" 0"
Jul 8 60° 86° 45° (1971) 110° (2007) 0.09" 0"
Jul 9 60° 86° 47° (1996) 109° (1989) 0.08" 0"
Jul 10 60° 86° 50° (1982) 108° (1966) 0.09" 0"
Jul 11 61° 86° 46° (1975) 107° (1973) 0.09" 0"
Jul 12 61° 87° 44° (1975) 101° (1969) 0.09" 0"
Jul 13 61° 87° 41° (1975) 104° (1974) 0.1" 0"
Jul 14 61° 87° 45° (1967) 105° (2003) 0.09" 0"
Jul 15 61° 87° 49° (1971) 106° (1988) 0.08" 0"
Jul 16 61° 87° 42° (1976) 114° (2006) 0.09" 0"
Jul 17 61° 88° 44° (1984) 111° (2006) 0.08" 0"
Jul 18 61° 88° 46° (1984) 110° (1977) 0.09" 0"
Jul 19 62° 88° 47° (1971) 105° (1983) 0.08" 0"
Jul 20 62° 88° 47° (1975) 105° (1983) 0.08" 0"
Jul 21 62° 88° 47° (1973) 101° (1967) 0.09" 0"
Jul 22 62° 88° 50° (1980) 107° (1965) 0.08" 0"
Jul 23 62° 88° 48° (1972) 107° (2007) 0.09" 0"
Jul 24 62° 89° 50° (1965) 106° (2007) 0.08" 0"
Jul 25 62° 89° 52° (2004) 109° (1963) 0.09" 0"
Jul 26 62° 89° 41° (1971) 106° (2007) 0.08" 0"
Jul 27 62° 89° 45° (1971) 102° (1987) 0.08" 0"
Jul 28 62° 89° 40° (1971) 105° (1988) 0.08" 0"
Jul 29 62° 89° 40° (1971) 110° (2006) 0.08" 0"
Jul 30 62° 89° 41° (1971) 106° (2006) 0.09" 0"
Jul 31 62° 89° 35° (1971) 110° (2006) 0.08" 0"
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