Custer, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 36° -43° (1963) 68° (1981) 0.39" 5.7"
February 16° 40° -34° (1962) 68° (1958) 0.63" 8.6"
March 21° 46° -30° (1956) 72° (1946) 1.07" 13.1"
April 28° 54° -15° (1966) 84° (1989) 2.06" 10.2"
May 37° 63° 5° (1954) 90° (1969) 3.31" 0.8"
June 46° 73° 19° (1951) 97° (1954) 3.17" 0.2"
July 52° 80° 30° (1971) 100° (1954) 3.02" 0"
August 50° 79° 22° (1966) 96° (1988) 2.38" 0"
September 41° 71° 8° (1961) 97° (1971) 1.5" 0.7"
October 31° 59° -5° (1991) 85° (1963) 1.47" 3.6"
November 21° 44° -25° (1952) 76° (1975) 0.67" 7.6"
December 14° 37° -37° (1964) 68° (1979) 0.52" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 33° 59° 10° (1950) 84° (1992) 0.09" NA
May 2 33° 59° 15° (1954) 81° (1959) 0.1" NA
May 3 33° 59° 5° (1954) 81° (1952) 0.1" NA
May 4 34° 59° 20° (1967) 81° (1952) 0.1" NA
May 5 34° 60° 14° (1944) 82° (1966) 0.1" NA
May 6 34° 60° 19° (1960) 83° (2004) 0.1" NA
May 7 35° 60° 19° (1951) 82° (1966) 0.1" NA
May 8 35° 61° 20° (1944) 79° (2004) 0.1" NA
May 9 35° 61° 19° (1968) 78° (1992) 0.1" NA
May 10 36° 61° 20° (1990) 82° (1962) 0.11" NA
May 11 36° 62° 13° (1953) 81° (1961) 0.11" NA
May 12 36° 62° 9° (1953) 80° (1962) 0.11" NA
May 13 36° 62° 17° (1966) 82° (1960) 0.11" NA
May 14 37° 63° 22° (1973) 81° (1944) 0.11" NA
May 15 37° 63° 21° (1953) 84° (1976) 0.11" NA
May 16 37° 63° 25° (1945) 81° (1987) 0.11" NA
May 17 38° 64° 23° (1968) 83° (1948) 0.11" NA
May 18 38° 64° 25° (1965) 83° (1948) 0.11" NA
May 19 38° 64° 21° (1966) 85° (1992) 0.11" NA
May 20 39° 65° 21° (1968) 86° (1954) 0.11" NA
May 21 39° 65° 15° (1963) 87° (1954) 0.11" NA
May 22 39° 65° 20° (1963) 86° (1964) 0.11" NA
May 23 40° 66° 22° (1959) 84° (1972) 0.11" NA
May 24 40° 66° 22° (1966) 81° (1967) 0.11" NA
May 25 40° 66° 24° (1984) 88° (1972) 0.11" NA
May 26 40° 67° 23° (1950) 88° (1972) 0.11" NA
May 27 41° 67° 22° (1973) 85° (1969) 0.11" NA
May 28 41° 67° 23° (1947) 90° (1969) 0.11" NA
May 29 41° 68° 20° (1947) 87° (2003) 0.11" NA
May 30 42° 68° 25° (1947) 88° (2003) 0.11" NA
May 31 42° 69° 28° (1982) 82° (1966) 0.11" NA
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