Jefferson Proving Ground, Indiana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 23° 42° -17° (1994) 75° (1950) 3.43" 3.4"
February 25° 47° -12° (1951) 76° (2000) 3.19" 2.7"
March 32° 57° -2° (1980) 84° (1981) 4.01" 1.5"
April 42° 68° 10° (2007) 93° (1957) 4.56" 0.1"
May 53° 76° 27° (1963) 97° (1953) 5.33" 0"
June 62° 85° 37° (1966) 103° (1988) 4.11" 0"
July 66° 88° 48° (1972) 108° (1954) 4.54" 0"
August 65° 88° 43° (1986) 104° (1988) 4.11" 0"
September 57° 81° 33° (1995) 108° (1953) 3.18" 0"
October 45° 70° 23° (1981) 96° (1953) 3.73" 0.1"
November 35° 58° 0° (1950) 88° (1950) 3.87" 0.5"
December 27° 46° -18° (1989) 77° (1982) 3.96" 3.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 65° 88° 53° (1982) 102° (1953) 0.14" 0"
Jul 2 65° 88° 51° (1988) 100° (1953) 0.14" 0"
Jul 3 66° 88° 54° (1968) 99° (1953) 0.14" 0"
Jul 4 66° 88° 51° (1968) 99° (1955) 0.14" 0"
Jul 5 66° 88° 52° (1963) 97° (1949) 0.14" 0"
Jul 6 66° 88° 48° (1972) 98° (1988) 0.15" 0"
Jul 7 66° 88° 50° (1972) 100° (1988) 0.15" 0"
Jul 8 66° 88° 52° (1984) 102° (1988) 0.15" 0"
Jul 9 66° 88° 54° (1953) 103° (1988) 0.15" 0"
Jul 10 66° 88° 51° (1963) 97° (1981) 0.15" 0"
Jul 11 66° 88° 52° (1963) 94° (1983) 0.14" 0"
Jul 12 66° 88° 52° (2007) 96° (1954) 0.14" 0"
Jul 13 66° 88° 53° (1967) 102° (1954) 0.15" 0"
Jul 14 66° 88° 54° (1975) 104° (1954) 0.15" 0"
Jul 15 66° 88° 54° (1967) 108° (1954) 0.15" 0"
Jul 16 66° 88° 53° (1985) 101° (1980) 0.15" 0"
Jul 17 66° 88° 54° (1976) 98° (1980) 0.16" 0"
Jul 18 66° 88° 55° (1985) 99° (1954) 0.15" 0"
Jul 19 66° 88° 54° (1984) 104° (1954) 0.13" 0"
Jul 20 66° 88° 51° (2007) 100° (1954) 0.14" 0"
Jul 21 66° 88° 51° (2007) 103° (1983) 0.14" 0"
Jul 22 66° 88° 57° (2000) 101° (1983) 0.15" 0"
Jul 23 66° 88° 54° (2007) 101° (1983) 0.14" 0"
Jul 24 66° 88° 54° (2007) 98° (1952) 0.15" 0"
Jul 25 66° 88° 54° (2007) 99° (2005) 0.16" 0"
Jul 26 66° 88° 57° (1957) 97° (1999) 0.15" 0"
Jul 27 66° 88° 52° (1962) 101° (1952) 0.16" 0"
Jul 28 66° 88° 56° (1962) 105° (1952) 0.14" 0"
Jul 29 66° 88° 54° (1965) 102° (1952) 0.15" 0"
Jul 30 66° 88° 52° (1985) 103° (1999) 0.14" 0"
Jul 31 66° 88° 55° (1981) 104° (1954) 0.15" 0"
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