Herndon, Virginia
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° 42° -18° (1984) 75° (1975) 2.68" 7.3"
February 26° 47° -14° (1979) 79° (2000) 2.83" 7.6"
March 33° 56° -1° (1993) 89° (1998) 3.38" 2.8"
April 42° 67° 17° (1969) 93° (2002) 3.47" 0.3"
May 51° 75° 28° (1970) 97° (1969) 4.55" 0"
June 61° 84° 36° (1977) 100° (1964) 3.98" 0"
July 66° 88° 41° (1988) 104° (1988) 3.67" 0"
August 64° 87° 38° (1982) 104° (1983) 3.53" 0"
September 56° 79° 30° (1974) 99° (1983) 3.92" 0"
October 44° 68° 15° (1969) 94° (2007) 3.25" 0"
November 35° 58° 9° (1989) 84° (1982) 3.41" 0.5"
December 27° 46° -4° (1989) 79° (1998) 2.96" 3.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 65° 88° 54° (1997) 100° (1980) 0.12" 0"
Aug 2 65° 88° 52° (1998) 99° (2002) 0.12" 0"
Aug 3 65° 88° 50° (1998) 99° (2006) 0.13" 0"
Aug 4 65° 88° 51° (1976) 99° (2002) 0.12" 0"
Aug 5 65° 88° 54° (1992) 99° (1995) 0.13" 0"
Aug 6 65° 87° 50° (1966) 96° (2007) 0.12" 0"
Aug 7 65° 87° 49° (1994) 97° (2007) 0.13" 0"
Aug 8 65° 87° 49° (1989) 101° (2007) 0.12" 0"
Aug 9 65° 87° 47° (1989) 97° (2001) 0.12" 0"
Aug 10 65° 87° 51° (1999) 97° (2009) 0.12" 0"
Aug 11 65° 87° 47° (1972) 97° (2010) 0.11" 0"
Aug 12 65° 87° 52° (1968) 98° (2002) 0.12" 0"
Aug 13 65° 87° 50° (1964) 98° (2002) 0.11" 0"
Aug 14 65° 87° 49° (1983) 100° (1985) 0.12" 0"
Aug 15 65° 87° 45° (1964) 102° (1988) 0.11" 0"
Aug 16 65° 87° 46° (1979) 100° (1997) 0.11" 0"
Aug 17 64° 87° 44° (1979) 101° (1988) 0.12" 0"
Aug 18 64° 87° 45° (1981) 98° (2009) 0.11" 0"
Aug 19 64° 87° 51° (1998) 95° (2002) 0.11" 0"
Aug 20 64° 87° 47° (1998) 104° (1983) 0.12" 0"
Aug 21 64° 86° 47° (1976) 94° (2009) 0.1" 0"
Aug 22 64° 86° 51° (1976) 101° (1983) 0.1" 0"
Aug 23 64° 86° 47° (1981) 96° (1998) 0.11" 0"
Aug 24 63° 86° 46° (1987) 97° (1998) 0.12" 0"
Aug 25 63° 86° 47° (1971) 97° (2007) 0.11" 0"
Aug 26 63° 86° 48° (1977) 95° (1998) 0.11" 0"
Aug 27 63° 86° 46° (1969) 100° (1987) 0.1" 0"
Aug 28 63° 85° 44° (1986) 98° (1993) 0.1" 0"
Aug 29 62° 85° 38° (1982) 98° (1991) 0.1" 0"
Aug 30 62° 85° 41° (1986) 99° (1991) 0.11" 0"
Aug 31 62° 85° 43° (1976) 98° (1991) 0.1" 0"
Advertisements