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
May 1 34° 55° 29° (1980) 84° (1998) 0.17" NA
May 2 34° 55° 27° (1997) 82° (1998) 0.17" NA
May 3 34° 55° 28° (2006) 73° (1992) 0.17" NA
May 4 35° 56° 28° (1999) 82° (1992) 0.16" NA
May 5 35° 56° 28° (1982) 85° (1992) 0.16" NA
May 6 35° 56° 27° (2000) 88° (1992) 0.16" NA
May 7 35° 56° 28° (1999) 88° (1987) 0.16" NA
May 8 35° 57° 28° (1999) 88° (1987) 0.16" NA
May 9 36° 57° 27° (1996) 87° (1987) 0.15" NA
May 10 36° 57° 26° (1999) 82° (1987) 0.15" NA
May 11 36° 57° 29° (1985) 80° (1987) 0.15" NA
May 12 36° 58° 27° (1985) 84° (1997) 0.15" NA
May 13 36° 58° 30° (1999) 86° (1997) 0.15" NA
May 14 37° 58° 29° (1999) 81° (1997) 0.15" NA
May 15 37° 58° 29° (1986) 79° (2006) 0.14" NA
May 16 37° 59° 29° (1998) 85° (2006) 0.14" NA
May 17 37° 59° 30° (1986) 87° (2006) 0.14" NA
May 18 37° 59° 30° (2003) 85° (2006) 0.14" NA
May 19 37° 59° 29° (2003) 82° (2006) 0.14" NA
May 20 38° 60° 32° (1989) 75° (1993) 0.14" NA
May 21 38° 60° 27° (2007) 74° (1979) 0.14" NA
May 22 38° 60° 32° (1990) 82° (1988) 0.14" NA
May 23 38° 60° 29° (1986) 91° (2001) 0.14" NA
May 24 38° 60° 31° (1980) 89° (2001) 0.14" NA
May 25 38° 61° 30° (1984) 88° (1992) 0.14" NA
May 26 39° 61° 30° (1999) 86° (1986) 0.14" NA
May 27 39° 61° 31° (1989) 83° (2001) 0.13" NA
May 28 39° 61° 31° (1998) 90° (2005) 0.13" NA
May 29 39° 61° 33° (1999) 95° (1983) 0.13" NA
May 30 39° 61° 32° (1979) 93° (1983) 0.13" NA
May 31 39° 62° 33° (1999) 88° (1986) 0.13" NA
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