Roche Harbor, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 34° 45° -8° (1950) 65° (1931) 3.86" 2.2"
February 36° 48° -4° (1893) 66° (1986) 2.79" 1"
March 37° 52° 10° (1920) 76° (2004) 2.27" 0.7"
April 40° 57° 28° (1936) 78° (1926) 1.89" 0"
May 44° 62° 31° (1954) 87° (1983) 1.72" 0"
June 47° 66° 37° (1933) 89° (2003) 1.4" 0"
July 49° 70° 40° (1949) 92° (1941) 0.94" 0"
August 50° 70° 38° (1980) 89° (1990) 1.06" 0"
September 47° 66° 32° (1926) 87° (1951) 1.34" 0"
October 43° 58° 26° (1935) 77° (1987) 2.42" 0"
November 38° 50° 4° (1985) 67° (1980) 4.38" 0.6"
December 35° 45° 2° (1968) 65° (1994) 4.09" 1.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 49° 69° 40° (1899) 82° (2006) 0.04" NA
Sep 2 49° 69° 42° (1899) 83° (1934) 0.04" NA
Sep 3 49° 69° 40° (1912) 82° (2003) 0.04" NA
Sep 4 49° 69° 44° (1900) 81° (1955) 0.04" NA
Sep 5 49° 68° 44° (1969) 82° (1973) 0.04" NA
Sep 6 48° 68° 40° (1927) 82° (1986) 0.04" NA
Sep 7 48° 68° 39° (1899) 85° (1981) 0.04" NA
Sep 8 48° 68° 40° (1899) 82° (1943) 0.04" NA
Sep 9 48° 68° 42° (1897) 83° (1940) 0.04" NA
Sep 10 48° 68° 41° (1928) 81° (1923) 0.04" NA
Sep 11 48° 67° 42° (1928) 81° (1975) 0.04" NA
Sep 12 48° 67° 37° (1970) 79° (1961) 0.04" NA
Sep 13 48° 67° 42° (1927) 83° (1957) 0.04" NA
Sep 14 48° 67° 40° (1899) 87° (1951) 0.04" NA
Sep 15 47° 67° 40° (1899) 82° (1943) 0.04" NA
Sep 16 47° 66° 39° (1936) 84° (1929) 0.04" NA
Sep 17 47° 66° 40° (1899) 79° (1991) 0.05" NA
Sep 18 47° 66° 40° (1899) 82° (1927) 0.05" NA
Sep 19 47° 66° 39° (2007) 80° (1974) 0.05" NA
Sep 20 47° 66° 37° (1951) 84° (1952) 0.05" NA
Sep 21 47° 65° 38° (1932) 83° (1952) 0.05" NA
Sep 22 47° 65° 36° (1926) 84° (1928) 0.05" NA
Sep 23 46° 65° 34° (1926) 78° (1957) 0.05" NA
Sep 24 46° 64° 32° (1926) 77° (1943) 0.05" NA
Sep 25 46° 64° 35° (1926) 78° (1939) 0.05" NA
Sep 26 46° 64° 36° (1926) 78° (2003) 0.05" NA
Sep 27 46° 64° 36° (1972) 83° (2003) 0.05" NA
Sep 28 46° 63° 37° (1897) 85° (2003) 0.05" NA
Sep 29 45° 63° 37° (1961) 81° (2003) 0.05" NA
Sep 30 45° 63° 38° (1903) 75° (1987) 0.05" NA
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