Janesville, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -30° (1970) 73° (1981) 0.46" NA
February 13° 34° -26° (1994) 78° (1982) 0.55" NA
March 23° 45° -19° (1962) 86° (1978) 1.87" NA
April 36° 59° 6° (1975) 95° (1980) 2.52" NA
May 48° 71° 26° (1967) 103° (1967) 3.9" NA
June 57° 81° 37° (1990) 109° (1988) 3.81" NA
July 62° 86° 44° (1995) 108° (1989) 3.01" NA
August 61° 84° 43° (1994) 108° (1988) 3.07" NA
September 50° 75° 26° (1991) 104° (1970) 2.13" NA
October 38° 62° 12° (1991) 94° (1963) 1.8" NA
November 24° 44° -13° (1991) 79° (1978) 1.29" NA
December 11° 32° -28° (1990) 64° (1962) 0.63" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 63° 86° 48° (1971) 105° (1988) 0.1" NA
Aug 2 63° 86° 50° (1995) 100° (1988) 0.1" NA
Aug 3 63° 86° 51° (1971) 100° (1988) 0.1" NA
Aug 4 63° 86° 49° (1974) 96° (1989) 0.1" NA
Aug 5 63° 86° 44° (1994) 98° (1961) 0.1" NA
Aug 6 63° 86° 43° (1994) 98° (1968) 0.1" NA
Aug 7 63° 86° 48° (1989) 100° (1968) 0.1" NA
Aug 8 62° 85° 51° (1976) 103° (1980) 0.1" NA
Aug 9 62° 85° 51° (1972) 95° (1995) 0.1" NA
Aug 10 62° 85° 51° (1985) 95° (1971) 0.1" NA
Aug 11 62° 85° 48° (1982) 96° (1964) 0.1" NA
Aug 12 62° 85° 46° (1964) 100° (1969) 0.11" NA
Aug 13 62° 85° 45° (1964) 97° (1970) 0.1" NA
Aug 14 61° 85° 43° (1994) 101° (1965) 0.1" NA
Aug 15 61° 84° 45° (1994) 101° (1988) 0.1" NA
Aug 16 61° 84° 46° (1992) 108° (1988) 0.1" NA
Aug 17 61° 84° 53° (1981) 101° (1988) 0.1" NA
Aug 18 61° 84° 49° (1963) 98° (1988) 0.1" NA
Aug 19 60° 84° 49° (1978) 103° (1983) 0.1" NA
Aug 20 60° 83° 49° (1967) 98° (1982) 0.1" NA
Aug 21 60° 83° 47° (1994) 97° (1968) 0.1" NA
Aug 22 60° 83° 47° (1994) 103° (1973) 0.1" NA
Aug 23 59° 83° 44° (1984) 103° (1971) 0.1" NA
Aug 24 59° 82° 52° (1972) 99° (1971) 0.1" NA
Aug 25 59° 82° 52° (1964) 98° (1991) 0.1" NA
Aug 26 58° 82° 50° (1985) 98° (1991) 0.1" NA
Aug 27 58° 82° 50° (1971) 107° (1973) 0.1" NA
Aug 28 58° 81° 46° (1976) 99° (1962) 0.09" NA
Aug 29 57° 81° 48° (1965) 100° (1984) 0.09" NA
Aug 30 57° 81° 46° (1988) 102° (1970) 0.09" NA
Aug 31 56° 81° 44° (1987) 96° (1990) 0.09" NA
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