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
Sep 1 46° 76° 27° (1965) 94° (1960) 0.06" NA
Sep 2 46° 75° 26° (1952) 95° (1969) 0.06" NA
Sep 3 46° 75° 26° (1974) 97° (1971) 0.06" NA
Sep 4 45° 75° 22° (1961) 92° (1978) 0.05" NA
Sep 5 45° 74° 26° (1962) 94° (1978) 0.05" NA
Sep 6 45° 74° 20° (1956) 94° (1978) 0.05" NA
Sep 7 44° 74° 28° (1956) 90° (1978) 0.05" NA
Sep 8 44° 73° 30° (1948) 88° (1978) 0.05" NA
Sep 9 44° 73° 22° (1943) 92° (1959) 0.05" NA
Sep 10 43° 73° 19° (1962) 90° (1979) 0.05" NA
Sep 11 43° 72° 21° (1989) 88° (1998) 0.05" NA
Sep 12 43° 72° 24° (1943) 88° (1990) 0.05" NA
Sep 13 42° 72° 25° (1961) 88° (1959) 0.05" NA
Sep 14 42° 71° 17° (1961) 87° (1955) 0.05" NA
Sep 15 41° 71° 19° (1961) 86° (1959) 0.05" NA
Sep 16 41° 71° 23° (1943) 90° (1948) 0.05" NA
Sep 17 41° 70° 19° (1971) 88° (2000) 0.05" NA
Sep 18 40° 70° 22° (1991) 89° (2000) 0.05" NA
Sep 19 40° 70° 26° (1945) 85° (1972) 0.05" NA
Sep 20 40° 69° 19° (1983) 86° (1979) 0.05" NA
Sep 21 39° 69° 20° (1995) 89° (1956) 0.04" NA
Sep 22 39° 69° 19° (1985) 82° (1953) 0.04" NA
Sep 23 39° 68° 19° (1956) 85° (1958) 0.04" NA
Sep 24 39° 68° 14° (1984) 85° (1992) 0.05" NA
Sep 25 38° 68° 21° (1985) 85° (1967) 0.05" NA
Sep 26 38° 67° 15° (1972) 85° (2001) 0.05" NA
Sep 27 38° 67° 12° (1984) 85° (1963) 0.05" NA
Sep 28 37° 66° 15° (1984) 84° (1952) 0.05" NA
Sep 29 37° 66° 11° (1985) 84° (1957) 0.05" NA
Sep 30 37° 66° 8° (1961) 85° (1978) 0.05" NA
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