Startup, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 35° 47° -8° (1950) 68° (2005) 8.36" 0.7"
February 35° 50° -4° (1950) 77° (1968) 5.63" 0.8"
March 37° 54° 6° (1955) 79° (1994) 6.03" 0.1"
April 40° 59° 17° (1982) 87° (2004) 5.29" 0"
May 45° 65° 27° (1965) 102° (1983) 5.06" 0"
June 50° 70° 31° (1976) 98° (1982) 3.85" 0"
July 52° 76° 35° (1952) 103° (1951) 1.69" 0"
August 52° 77° 36° (1973) 100° (1960) 1.78" 0"
September 47° 72° 30° (1983) 98° (1988) 3.35" 0"
October 42° 61° 19° (1949) 92° (1987) 6.21" 0"
November 38° 51° 4° (1955) 78° (1949) 10.23" 0.5"
December 34° 45° 3° (1990) 67° (1980) 7.65" 1.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 50° 75° 40° (1973) 93° (1987) 0.08" 0"
Sep 2 50° 75° 36° (1960) 92° (2006) 0.09" 0"
Sep 3 50° 75° 35° (1956) 98° (1988) 0.09" 0"
Sep 4 50° 75° 34° (1956) 97° (1953) 0.1" 0"
Sep 5 49° 74° 37° (1956) 93° (1953) 0.1" 0"
Sep 6 49° 74° 37° (1960) 93° (1956) 0.09" 0"
Sep 7 49° 74° 36° (1960) 90° (1958) 0.1" 0"
Sep 8 49° 74° 36° (1956) 94° (1981) 0.1" 0"
Sep 9 49° 73° 36° (1964) 90° (1963) 0.1" 0"
Sep 10 49° 73° 38° (1964) 87° (1963) 0.1" 0"
Sep 11 48° 73° 34° (1986) 94° (1953) 0.1" 0"
Sep 12 48° 73° 36° (1970) 86° (2007) 0.11" 0"
Sep 13 48° 72° 31° (1970) 89° (1957) 0.1" 0"
Sep 14 48° 72° 35° (1971) 94° (1951) 0.11" 0"
Sep 15 48° 72° 34° (1970) 95° (1979) 0.11" 0"
Sep 16 47° 72° 33° (1971) 98° (1967) 0.11" 0"
Sep 17 47° 71° 35° (1953) 91° (1967) 0.11" 0"
Sep 18 47° 71° 36° (1965) 84° (1991) 0.11" 0"
Sep 19 47° 71° 36° (1957) 87° (1991) 0.11" 0"
Sep 20 47° 71° 34° (1951) 84° (1952) 0.12" 0"
Sep 21 46° 70° 35° (1949) 90° (1952) 0.12" 0"
Sep 22 46° 70° 33° (1961) 91° (1974) 0.13" 0"
Sep 23 46° 70° 31° (1961) 94° (1990) 0.12" 0"
Sep 24 46° 69° 32° (1970) 84° (1989) 0.13" 0"
Sep 25 46° 69° 31° (1972) 93° (1997) 0.12" 0"
Sep 26 45° 69° 35° (1972) 87° (1991) 0.14" 0"
Sep 27 45° 68° 31° (1972) 92° (1967) 0.13" 0"
Sep 28 45° 68° 31° (1983) 90° (1967) 0.14" 0"
Sep 29 45° 67° 30° (1983) 86° (2003) 0.14" 0"
Sep 30 45° 67° 30° (1983) 88° (1992) 0.14" 0"
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