Seattle, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -8.9° (1980) 17.8° (1981) 5.24" 2.9"
February 11° -11.7° (1989) 21.1° (1986) 4.09" 1"
March 13° -5° (1989) 23.3° (1995) 3.92" 0.4"
April 15° 0° (1997) 29.4° (1976) 2.75" 0"
May 18° 3.3° (1996) 31.1° (1973) 2.03" 0"
June 12° 21° 5.6° (1991) 33.9° (1995) 1.55" 0"
July 13° 24° 8.3° (1979) 35.6° (1991) 0.93" 0"
August 14° 24° 8.9° (1980) 34.4° (1996) 1.16" 0"
September 12° 21° 5° (1985) 32.8° (1988) 1.61" 0"
October 16° -0.6° (1991) 27.8° (1991) 3.24" 0"
November 11° -10.6° (1985) 21.7° (1980) 5.67" 0.6"
December -11.1° (1983) 18.3° (1980) 6.06" 2.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 12.8° 22.8° 9° (1973) 31° (1987) 0.04" NA
Sep 2 12.8° 22.8° 9° (1984) 33° (1988) 0.04" NA
Sep 3 12.8° 22.8° 10° (1973) 30° (1988) 0.04" NA
Sep 4 12.8° 22.8° 11° (1975) 27° (1991) 0.04" NA
Sep 5 12.8° 22.8° 9° (1992) 31° (1973) 0.05" NA
Sep 6 12.2° 22.2° 8° (1992) 32° (1986) 0.05" NA
Sep 7 12.2° 22.2° 8° (1992) 29° (1981) 0.05" NA
Sep 8 12.2° 22.2° 9° (1983) 28° (1993) 0.05" NA
Sep 9 12.2° 22.2° 9° (1991) 29° (1993) 0.05" NA
Sep 10 12.2° 21.7° 10° (1977) 28° (1993) 0.05" NA
Sep 11 11.7° 21.7° 8° (1988) 27° (1975) 0.05" NA
Sep 12 11.7° 21.7° 9° (1993) 27° (1975) 0.05" NA
Sep 13 11.7° 21.7° 7° (1992) 29° (1979) 0.05" NA
Sep 14 11.7° 21.7° 7° (1992) 31° (1979) 0.05" NA
Sep 15 11.7° 21.1° 7° (1992) 28° (1995) 0.05" NA
Sep 16 11.7° 21.1° 6° (1992) 28° (1981) 0.05" NA
Sep 17 11.1° 21.1° 8° (1987) 26° (1994) 0.05" NA
Sep 18 11.1° 20.6° 7° (1988) 28° (1991) 0.05" NA
Sep 19 11.1° 20.6° 7° (1983) 26° (1974) 0.06" NA
Sep 20 11.1° 20.6° 7° (1983) 29° (1974) 0.06" NA
Sep 21 11.1° 20.6° 6° (1993) 29° (1974) 0.06" NA
Sep 22 10.6° 20° 7° (1993) 29° (1990) 0.06" NA
Sep 23 10.6° 20° 7° (1996) 29° (1995) 0.06" NA
Sep 24 10.6° 20° 7° (1984) 29° (1997) 0.06" NA
Sep 25 10.6° 19.4° 7° (1996) 27° (1991) 0.06" NA
Sep 26 10.6° 19.4° 7° (1981) 25° (1980) 0.06" NA
Sep 27 10° 19.4° 6° (1992) 26° (1994) 0.06" NA
Sep 28 10° 18.9° 6° (1983) 24° (1993) 0.07" NA
Sep 29 10° 18.9° 5° (1985) 27° (1993) 0.07" NA
Sep 30 10° 18.9° 6° (1985) 26° (1992) 0.07" NA
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