Jefferson, Wisconsin
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -33° (1951) 58° (2002) 1.39" 10"
February 13° 31° -39° (1996) 67° (1999) 1.32" 6.5"
March 24° 43° -21° (1962) 83° (1986) 2.1" 7.8"
April 36° 57° -4° (1979) 90° (2002) 3.42" 1.7"
May 46° 69° 25° (1966) 93° (1978) 3.25" 0.1"
June 56° 79° 35° (2003) 101° (1988) 3.79" 0"
July 61° 83° 39° (1965) 102° (1988) 3.92" 0"
August 58° 80° 37° (1986) 102° (1988) 4.16" 0"
September 49° 73° 28° (1991) 98° (1955) 3.41" 0"
October 38° 61° 11° (1988) 88° (2007) 2.56" 0.1"
November 27° 45° -10° (1950) 78° (1999) 2.49" 2.1"
December 15° 31° -29° (1983) 67° (2001) 1.65" 9.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 61° 83° 43° (1990) 97° (2001) 0.13" NA
Aug 2 60° 83° 45° (1985) 102° (1988) 0.13" NA
Aug 3 60° 82° 47° (1985) 99° (1988) 0.13" NA
Aug 4 60° 82° 45° (1951) 95° (1982) 0.13" NA
Aug 5 60° 82° 46° (1957) 97° (1988) 0.13" NA
Aug 6 60° 82° 45° (1971) 94° (1968) 0.13" NA
Aug 7 60° 82° 42° (1990) 91° (1968) 0.13" NA
Aug 8 60° 82° 46° (1976) 94° (1988) 0.13" NA
Aug 9 60° 82° 43° (1964) 97° (1983) 0.14" NA
Aug 10 59° 82° 46° (1986) 93° (2001) 0.14" NA
Aug 11 59° 81° 45° (1967) 91° (1958) 0.14" NA
Aug 12 59° 81° 41° (1983) 94° (2002) 0.14" NA
Aug 13 59° 81° 46° (1950) 95° (1988) 0.14" NA
Aug 14 59° 81° 41° (1963) 92° (1995) 0.14" NA
Aug 15 59° 81° 42° (1979) 95° (1988) 0.14" NA
Aug 16 58° 81° 41° (1979) 94° (1988) 0.14" NA
Aug 17 58° 80° 45° (1976) 101° (1988) 0.14" NA
Aug 18 58° 80° 41° (1963) 101° (1988) 0.14" NA
Aug 19 58° 80° 44° (1985) 96° (1955) 0.14" NA
Aug 20 57° 80° 39° (1950) 99° (1955) 0.14" NA
Aug 21 57° 80° 43° (1950) 100° (1955) 0.14" NA
Aug 22 57° 79° 46° (1967) 94° (2003) 0.13" NA
Aug 23 57° 79° 46° (1952) 94° (1962) 0.13" NA
Aug 24 56° 79° 41° (1984) 96° (1948) 0.13" NA
Aug 25 56° 79° 40° (1958) 93° (1978) 0.13" NA
Aug 26 56° 79° 42° (1964) 95° (1973) 0.13" NA
Aug 27 56° 78° 40° (1968) 95° (1973) 0.13" NA
Aug 28 55° 78° 37° (1986) 96° (1955) 0.13" NA
Aug 29 55° 78° 39° (1965) 96° (1984) 0.13" NA
Aug 30 55° 78° 46° (1986) 97° (1984) 0.13" NA
Aug 31 54° 77° 44° (1967) 98° (1953) 0.13" NA
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