Standing Rock Reservation, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -40° (1966) 67° (1981) 0.32" 4.1"
February 11° 32° -32° (1996) 73° (1982) 0.47" 5.7"
March 21° 42° -30° (1980) 85° (1967) 1.08" 6.9"
April 33° 57° 1° (1997) 97° (1980) 1.64" 4.3"
May 44° 69° 18° (1967) 104° (1969) 3.03" 0.3"
June 54° 79° 30° (1969) 111° (2002) 2.98" 0"
July 59° 87° 35° (1971) 114° (2006) 2.58" 0"
August 57° 86° 35° (1977) 111° (1988) 1.52" 0"
September 46° 75° 13° (1984) 106° (1983) 1.29" 0"
October 33° 61° -5° (1991) 97° (1963) 1.6" 0.7"
November 19° 41° -18° (1985) 83° (1999) 0.58" 4.4"
December 29° -33° (1967) 72° (1965) 0.36" 5.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 39° 63° 20° (1984) 96° (1992) 0.08" NA
May 2 39° 64° 22° (1967) 90° (1987) 0.08" NA
May 3 39° 64° 18° (1967) 92° (1982) 0.08" NA
May 4 40° 64° 19° (1967) 93° (1966) 0.08" NA
May 5 40° 65° 24° (1967) 91° (1986) 0.09" NA
May 6 41° 65° 24° (1967) 92° (2000) 0.09" NA
May 7 41° 66° 24° (1976) 88° (1970) 0.09" NA
May 8 41° 66° 19° (1980) 93° (1992) 0.09" NA
May 9 42° 66° 27° (1966) 90° (1992) 0.09" NA
May 10 42° 67° 25° (1981) 89° (1992) 0.09" NA
May 11 43° 67° 27° (1979) 88° (1987) 0.1" NA
May 12 43° 67° 26° (1979) 89° (2004) 0.1" NA
May 13 43° 68° 27° (1973) 89° (1977) 0.1" NA
May 14 44° 68° 22° (1983) 92° (2001) 0.1" NA
May 15 44° 68° 21° (1974) 87° (1972) 0.1" NA
May 16 44° 69° 32° (1983) 92° (1972) 0.1" NA
May 17 45° 69° 27° (1969) 92° (1970) 0.1" NA
May 18 45° 69° 32° (1983) 92° (1998) 0.1" NA
May 19 45° 70° 35° (1981) 96° (1992) 0.1" NA
May 20 46° 70° 25° (1968) 101° (1992) 0.1" NA
May 21 46° 70° 29° (1968) 92° (1964) 0.1" NA
May 22 46° 71° 31° (1987) 94° (1980) 0.1" NA
May 23 47° 71° 31° (1984) 90° (2006) 0.1" NA
May 24 47° 72° 33° (2002) 90° (1978) 0.11" NA
May 25 47° 72° 34° (1984) 89° (1977) 0.11" NA
May 26 48° 72° 27° (1984) 94° (1969) 0.11" NA
May 27 48° 73° 34° (1965) 104° (1969) 0.11" NA
May 28 48° 73° 27° (1965) 94° (2006) 0.11" NA
May 29 49° 73° 32° (1984) 88° (1988) 0.11" NA
May 30 49° 74° 32° (1975) 95° (1969) 0.11" NA
May 31 49° 74° 35° (1974) 92° (2002) 0.1" NA
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