Dulles, Virginia
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° 41° -18° (1984) 75° (1975) 3.05" 8.1"
February 24° 46° -14° (1979) 79° (2000) 2.77" 6.2"
March 32° 55° -1° (1993) 89° (1998) 3.55" 3.4"
April 40° 66° 17° (1969) 93° (2002) 3.22" 0.4"
May 50° 75° 28° (1970) 97° (1969) 4.22" 0"
June 59° 83° 36° (1977) 100° (1964) 4.07" 0"
July 64° 87° 41° (1988) 104° (1988) 3.57" 0"
August 63° 86° 38° (1982) 104° (1983) 3.78" 0"
September 56° 79° 30° (1974) 99° (1983) 3.82" 0"
October 42° 68° 15° (1969) 94° (2007) 3.37" 0.1"
November 34° 57° 9° (1989) 84° (1982) 3.31" 0.8"
December 26° 46° -4° (1989) 79° (1998) 3.07" 2.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 23° 42° -6° (1968) 68° (2005) 0.1" NA
Jan 2 23° 42° -7° (1968) 67° (2000) 0.1" NA
Jan 3 23° 42° 8° (1979) 68° (2000) 0.1" NA
Jan 4 22° 42° 5° (1979) 74° (1997) 0.1" NA
Jan 5 22° 42° 5° (1970) 69° (1997) 0.1" NA
Jan 6 22° 42° 4° (1999) 71° (2007) 0.1" NA
Jan 7 22° 41° 8° (1988) 66° (1998) 0.1" NA
Jan 8 22° 41° -4° (1970) 69° (1998) 0.1" NA
Jan 9 22° 41° -8° (1970) 63° (2006) 0.1" NA
Jan 10 22° 41° 0° (1982) 58° (2002) 0.1" NA
Jan 11 22° 41° -5° (1988) 71° (1975) 0.1" NA
Jan 12 22° 41° -4° (1977) 63° (1995) 0.1" NA
Jan 13 22° 41° -3° (1981) 69° (2005) 0.1" NA
Jan 14 22° 41° 5° (1970) 72° (1995) 0.1" NA
Jan 15 22° 41° -7° (1964) 68° (2007) 0.1" NA
Jan 16 22° 41° -4° (1964) 65° (1974) 0.1" NA
Jan 17 22° 41° -7° (1982) 70° (1990) 0.1" NA
Jan 18 21° 41° -1° (1994) 70° (1990) 0.1" NA
Jan 19 21° 41° -6° (1994) 65° (1972) 0.1" NA
Jan 20 21° 41° -7° (1985) 63° (2006) 0.1" NA
Jan 21 21° 41° -16° (1984) 62° (2006) 0.1" NA
Jan 22 21° 41° -18° (1984) 68° (1986) 0.1" NA
Jan 23 21° 41° -4° (1978) 72° (1967) 0.1" NA
Jan 24 22° 41° -2° (1987) 73° (1967) 0.1" NA
Jan 25 22° 41° -5° (1987) 73° (1967) 0.1" NA
Jan 26 22° 42° 3° (1987) 70° (1967) 0.1" NA
Jan 27 22° 42° -9° (1987) 71° (1974) 0.09" NA
Jan 28 22° 42° -17° (1987) 68° (2002) 0.09" NA
Jan 29 22° 42° -1° (1987) 75° (1975) 0.09" NA
Jan 30 22° 42° 2° (1965) 70° (2002) 0.09" NA
Jan 31 22° 42° -7° (1965) 65° (1993) 0.09" NA
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