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
Dec 1 17° 39° -16° (1954) 60° (1969) 0.02" NA
Dec 2 17° 39° -12° (1954) 64° (1969) 0.02" NA
Dec 3 17° 39° -7° (1978) 63° (1959) 0.02" NA
Dec 4 16° 39° -9° (1972) 63° (1987) 0.02" NA
Dec 5 16° 39° -25° (1972) 60° (1963) 0.02" NA
Dec 6 16° 39° -27° (1972) 60° (1963) 0.02" NA
Dec 7 16° 39° -15° (1958) 56° (1970) 0.02" NA
Dec 8 16° 38° -26° (1972) 59° (1990) 0.02" NA
Dec 9 15° 38° -25° (1977) 64° (1990) 0.02" NA
Dec 10 15° 38° -18° (1961) 62° (1990) 0.02" NA
Dec 11 15° 38° -21° (1961) 61° (1981) 0.02" NA
Dec 12 15° 38° -20° (1961) 58° (1993) 0.02" NA
Dec 13 15° 38° -19° (1961) 56° (1962) 0.02" NA
Dec 14 14° 38° -16° (1967) 62° (1997) 0.02" NA
Dec 15 14° 37° -25° (1945) 62° (1952) 0.02" NA
Dec 16 14° 37° -20° (1989) 63° (1962) 0.02" NA
Dec 17 14° 37° -37° (1964) 62° (1962) 0.02" NA
Dec 18 14° 37° -34° (1964) 66° (1976) 0.02" NA
Dec 19 14° 37° -22° (1990) 68° (1979) 0.02" NA
Dec 20 13° 37° -25° (1951) 60° (1954) 0.02" NA
Dec 21 13° 37° -30° (1990) 58° (2003) 0.02" NA
Dec 22 13° 37° -29° (1983) 62° (1954) 0.01" NA
Dec 23 13° 36° -34° (1983) 58° (1994) 0.01" NA
Dec 24 13° 36° -26° (1944) 57° (1999) 0.01" NA
Dec 25 13° 36° -22° (1944) 60° (1960) 0.01" NA
Dec 26 13° 36° -22° (1962) 55° (1963) 0.01" NA
Dec 27 13° 36° -12° (1964) 60° (1947) 0.01" NA
Dec 28 13° 36° -29° (1990) 62° (1980) 0.01" NA
Dec 29 12° 36° -24° (1946) 56° (1956) 0.01" NA
Dec 30 12° 36° -23° (1978) 56° (1956) 0.01" NA
Dec 31 12° 36° -28° (1978) 61° (1962) 0.01" NA
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