Westerville, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 31° -29° (1966) 71° (1981) 0.5" 6.2"
February 15° 37° -33° (1988) 74° (1981) 0.63" 6.5"
March 26° 48° -22° (1960) 90° (1968) 1.66" 5.1"
April 37° 63° 7° (1975) 97° (1965) 3.17" 2.5"
May 49° 73° 20° (1967) 104° (1967) 3.92" 0.2"
June 59° 82° 36° (1956) 108° (1988) 4.05" 0"
July 64° 86° 37° (1972) 108° (1990) 3.72" 0"
August 62° 84° 36° (1967) 106° (1973) 2.75" 0"
September 52° 78° 23° (1984) 103° (1976) 2.93" 0"
October 39° 65° 10° (1972) 98° (1963) 2.24" 0.9"
November 26° 47° -24° (1959) 83° (1999) 1.45" 5.1"
December 13° 33° -30° (1989) 69° (1970) 0.64" 6.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 20° 42° -18° (1962) 74° (1992) 0.02" 0.2"
Mar 2 20° 42° -2° (1950) 77° (1974) 0.02" 0.2"
Mar 3 21° 42° -7° (1960) 76° (1974) 0.03" 0.2"
Mar 4 21° 43° -22° (1960) 74° (2000) 0.02" 0.2"
Mar 5 22° 43° -19° (1960) 73° (2000) 0.03" 0.2"
Mar 6 22° 44° -16° (1989) 80° (1987) 0.03" 0.2"
Mar 7 22° 44° -16° (1996) 78° (1987) 0.03" 0.2"
Mar 8 23° 44° -9° (1995) 77° (1987) 0.03" 0.1"
Mar 9 23° 45° -6° (1996) 68° (1967) 0.04" 0.2"
Mar 10 23° 45° -8° (1984) 75° (1967) 0.04" 0.2"
Mar 11 24° 46° -13° (1948) 70° (1990) 0.05" 0.2"
Mar 12 24° 46° -15° (1998) 71° (1990) 0.04" 0.1"
Mar 13 25° 47° -12° (1975) 72° (1987) 0.05" 0.2"
Mar 14 25° 47° -18° (1960) 70° (1966) 0.05" 0.2"
Mar 15 25° 48° 1° (1949) 80° (1966) 0.05" 0.2"
Mar 16 26° 48° -2° (1962) 79° (1966) 0.06" 0.2"
Mar 17 26° 49° -1° (1962) 74° (1966) 0.06" 0.1"
Mar 18 26° 49° -3° (1989) 76° (1985) 0.06" 0.2"
Mar 19 27° 50° -6° (1965) 78° (1976) 0.06" 0.1"
Mar 20 27° 50° 0° (1965) 77° (1994) 0.07" 0.2"
Mar 21 28° 51° -5° (1965) 76° (1997) 0.06" 0.1"
Mar 22 28° 51° 4° (1955) 80° (1988) 0.07" 0.2"
Mar 23 28° 52° 0° (1965) 80° (1967) 0.07" 0.1"
Mar 24 29° 52° -1° (1974) 83° (1963) 0.07" 0.1"
Mar 25 29° 53° 1° (1974) 83° (1967) 0.07" 0.2"
Mar 26 29° 53° -1° (1965) 83° (1989) 0.07" 0.1"
Mar 27 30° 54° 5° (1955) 84° (1989) 0.07" 0.2"
Mar 28 30° 54° 10° (1969) 82° (1989) 0.08" 0.1"
Mar 29 30° 55° 5° (1969) 86° (1986) 0.08" 0.1"
Mar 30 31° 55° 0° (1969) 90° (1968) 0.09" 0.2"
Mar 31 31° 56° 14° (1954) 85° (1978) 0.09" 0.1"
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