Seattle, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -17.8° (1950) 19.4° (1931) 5.13" 2.4"
February 10° -17.2° (1950) 21.1° (1968) 4.18" 1.3"
March 12° -11.7° (1955) 25.6° (2004) 3.75" 0.6"
April 14° -1.7° (1975) 30.6° (1947) 2.59" 0.1"
May 18° -8.9° (1928) 33.9° (1963) 1.78" 0"
June 11° 21° 3.3° (1952) 36.7° (1925) 1.49" 0"
July 13° 24° -3.9° (1938) 37.8° (1994) 0.79" 0"
August 13° 24° 6.7° (1955) 37.2° (1981) 1.02" 0"
September 11° 21° 1.7° (1972) 36.7° (1988) 1.63" 0"
October 16° -7.2° (1937) 31.7° (1987) 3.19" 0.1"
November 11° -17.8° (1939) 23.3° (1949) 5.9" 1.1"
December -14.4° (1968) 18.3° (1939) 5.62" 2.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 2.8° 8.3° -7° (1985) 16° (1926) 0.2" NA
Dec 2 2.8° 8.3° -4° (1985) 16° (1939) 0.2" NA
Dec 3 2.8° 8.3° -3° (1994) 16° (1965) 0.2" NA
Dec 4 2.8° 8.3° -7° (1909) 18° (1939) 0.2" NA
Dec 5 2.8° 7.8° -5° (1956) 17° (1900) 0.19" NA
Dec 6 2.8° 7.8° -7° (1956) 14° (1900) 0.19" NA
Dec 7 2.8° 7.8° -8° (1972) 14° (1939) 0.19" NA
Dec 8 2.2° 7.8° -11° (1972) 15° (1957) 0.19" NA
Dec 9 2.2° 7.8° -7° (1932) 16° (1993) 0.19" NA
Dec 10 2.2° 7.8° -8° (1919) 18° (1993) 0.19" NA
Dec 11 2.2° 7.8° -9° (1919) 15° (1895) 0.19" NA
Dec 12 2.2° 7.8° -11° (1919) 16° (1995) 0.18" NA
Dec 13 2.2° 7.2° -9° (1919) 15° (1952) 0.18" NA
Dec 14 2.2° 7.2° -7° (1926) 15° (2002) 0.18" NA
Dec 15 2.2° 7.2° -8° (1924) 17° (1980) 0.18" NA
Dec 16 2.2° 7.2° -12° (1964) 14° (1974) 0.18" NA
Dec 17 2.2° 7.2° -12° (1964) 14° (1994) 0.18" NA
Dec 18 2.2° 7.2° -11° (1924) 14° (1917) 0.18" NA
Dec 19 2.2° 7.2° -9° (1924) 14° (1936) 0.18" NA
Dec 20 2.2° 7.2° -10° (1990) 16° (1919) 0.18" NA
Dec 21 2.2° 7.2° -11° (1990) 17° (1940) 0.17" NA
Dec 22 1.7° 7.2° -10° (1983) 16° (1940) 0.17" NA
Dec 23 1.7° 7.2° -13° (1983) 14° (1950) 0.17" NA
Dec 24 1.7° 7.2° -9° (1948) 17° (2005) 0.17" NA
Dec 25 1.7° 7.2° -8° (1924) 16° (1980) 0.17" NA
Dec 26 1.7° 7.2° -6° (1948) 17° (1980) 0.17" NA
Dec 27 1.7° 7.2° -7° (1968) 16° (1919) 0.17" NA
Dec 28 1.7° 7.2° -11° (1990) 16° (1917) 0.17" NA
Dec 29 1.7° 7.2° -13° (1968) 15° (1917) 0.17" NA
Dec 30 1.7° 7.2° -14° (1968) 14° (1917) 0.17" NA
Dec 31 1.7° 7.2° -11° (1978) 14° (1917) 0.17" NA
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