Plymouth, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° 40° -22° (1957) 67° (1990) 1.01" NA
February 31° 46° -7° (1996) 70° (1982) 0.77" NA
March 35° 56° 12° (1993) 79° (1960) 0.75" NA
April 41° 63° 29° (1997) 90° (1977) 0.62" NA
May 48° 71° 34° (2002) 104° (1983) 0.65" NA
June 54° 78° 35° (1974) 106° (1961) 0.43" NA
July 60° 86° 43° (1963) 110° (1960) 0.25" NA
August 60° 86° 43° (1964) 111° (1961) 0.37" NA
September 52° 76° 34° (1983) 103° (1955) 0.39" NA
October 43° 64° 20° (2002) 87° (1988) 0.59" NA
November 36° 49° -2° (1955) 75° (1999) 1.18" NA
December 30° 41° -9° (1983) 68° (2007) 1.12" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 32° 43° 7° (1985) 59° (1995) 0.04" NA
Dec 2 32° 43° 6° (1985) 61° (1977) 0.04" NA
Dec 3 32° 43° 10° (1985) 62° (1975) 0.04" NA
Dec 4 32° 43° 12° (1972) 68° (2007) 0.04" NA
Dec 5 32° 42° 12° (1972) 64° (2007) 0.04" NA
Dec 6 31° 42° 15° (1956) 59° (1957) 0.04" NA
Dec 7 31° 42° 8° (1972) 60° (1970) 0.04" NA
Dec 8 31° 42° -1° (1972) 60° (1957) 0.04" NA
Dec 9 31° 41° -4° (1972) 61° (1975) 0.04" NA
Dec 10 31° 41° -3° (1972) 61° (1979) 0.04" NA
Dec 11 30° 41° -2° (1972) 66° (1993) 0.04" NA
Dec 12 30° 41° 0° (1972) 60° (1955) 0.04" NA
Dec 13 30° 41° 0° (1972) 60° (1995) 0.04" NA
Dec 14 30° 41° 4° (1972) 60° (1998) 0.04" NA
Dec 15 30° 40° 4° (1972) 67° (2002) 0.04" NA
Dec 16 30° 40° 0° (1964) 61° (2002) 0.04" NA
Dec 17 30° 40° -3° (1964) 61° (1997) 0.04" NA
Dec 18 29° 40° -3° (1964) 59° (1974) 0.04" NA
Dec 19 29° 40° 3° (1984) 57° (1957) 0.04" NA
Dec 20 29° 40° 4° (1984) 58° (1994) 0.03" NA
Dec 21 29° 40° -4° (1990) 61° (1994) 0.03" NA
Dec 22 29° 39° -5° (1990) 58° (1972) 0.03" NA
Dec 23 29° 39° -5° (1983) 58° (1971) 0.03" NA
Dec 24 29° 39° -9° (1983) 56° (1971) 0.03" NA
Dec 25 29° 39° -1° (1983) 62° (1957) 0.03" NA
Dec 26 29° 39° 9° (1990) 64° (1980) 0.03" NA
Dec 27 29° 39° 13° (1983) 61° (1980) 0.03" NA
Dec 28 29° 39° 9° (1983) 58° (1980) 0.03" NA
Dec 29 29° 39° -1° (1990) 56° (1961) 0.03" NA
Dec 30 29° 39° -7° (1990) 62° (1975) 0.03" NA
Dec 31 28° 39° -5° (1968) 56° (1970) 0.03" NA
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