National, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° 36° -3° (1980) 57° (2005) 11.23" NA
February 27° 40° -3° (1989) 68° (1992) 8.87" NA
March 29° 45° 11° (1989) 71° (1994) 7" NA
April 31° 51° 19° (1997) 87° (1987) 5.84" NA
May 37° 58° 26° (1999) 95° (1983) 4.54" NA
June 42° 65° 30° (1984) 96° (2006) 3.62" NA
July 46° 73° 32° (2000) 102° (2006) 1.96" NA
August 47° 74° 34° (1980) 99° (1981) 1.73" NA
September 42° 68° 27° (1984) 101° (1988) 4.26" NA
October 36° 56° 19° (2006) 88° (1987) 6.99" NA
November 30° 42° 1° (1985) 61° (2001) 12.72" NA
December 26° 36° -8° (1990) 54° (1989) 12.06" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 28° 37° 5° (1985) 52° (2002) 0.43" NA
Dec 2 27° 37° 8° (1985) 44° (2002) 0.43" NA
Dec 3 27° 37° 15° (1992) 42° (1982) 0.42" NA
Dec 4 27° 37° 9° (1994) 49° (1979) 0.42" NA
Dec 5 27° 37° 9° (1994) 50° (1989) 0.42" NA
Dec 6 27° 37° 12° (1994) 48° (2002) 0.41" NA
Dec 7 27° 37° 12° (1980) 44° (1988) 0.41" NA
Dec 8 27° 37° 13° (1980) 45° (1979) 0.4" NA
Dec 9 27° 36° 19° (2007) 50° (1979) 0.4" NA
Dec 10 26° 36° 20° (1994) 48° (1987) 0.4" NA
Dec 11 26° 36° 17° (1985) 43° (1993) 0.4" NA
Dec 12 26° 36° 20° (1981) 46° (1995) 0.39" NA
Dec 13 26° 36° 17° (1987) 50° (1995) 0.39" NA
Dec 14 26° 36° 16° (1987) 46° (2004) 0.39" NA
Dec 15 26° 36° 18° (1987) 47° (2002) 0.38" NA
Dec 16 26° 36° 18° (1992) 42° (1980) 0.38" NA
Dec 17 26° 36° 16° (1987) 43° (1980) 0.38" NA
Dec 18 26° 36° 5° (1984) 45° (1979) 0.38" NA
Dec 19 26° 36° 5° (1984) 48° (2004) 0.38" NA
Dec 20 26° 36° -3° (1990) 44° (1979) 0.38" NA
Dec 21 26° 36° -8° (1990) 42° (1979) 0.37" NA
Dec 22 26° 36° -7° (1990) 44° (1980) 0.37" NA
Dec 23 26° 36° -4° (1983) 45° (1989) 0.37" NA
Dec 24 26° 36° -2° (1983) 54° (1989) 0.37" NA
Dec 25 25° 36° 7° (1983) 50° (1980) 0.37" NA
Dec 26 25° 36° 17° (1988) 50° (1980) 0.37" NA
Dec 27 25° 35° 17° (1988) 48° (1980) 0.37" NA
Dec 28 25° 35° 3° (1978) 50° (2004) 0.37" NA
Dec 29 25° 35° -6° (1990) 43° (1999) 0.37" NA
Dec 30 25° 35° -5° (1978) 45° (1979) 0.37" NA
Dec 31 25° 35° -3° (1978) 51° (1980) 0.37" NA
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