Plain, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 34° -25° (1950) 64° (1971) 4.4" NA
February 22° 42° -25° (1950) 64° (1988) 3.23" NA
March 27° 52° -6° (1955) 76° (1994) 2.09" NA
April 33° 62° 19° (1972) 88° (1987) 1.1" NA
May 40° 71° 24° (2002) 101° (1986) 0.85" NA
June 46° 79° 31° (1954) 105° (1992) 0.84" NA
July 51° 87° 34° (1963) 107° (1979) 0.39" NA
August 50° 88° 30° (1980) 108° (1967) 0.58" NA
September 42° 79° 24° (1983) 102° (1988) 0.75" NA
October 33° 64° 11° (2002) 91° (1958) 1.74" NA
November 27° 44° -10° (1959) 68° (1989) 4.27" NA
December 19° 34° -36° (1968) 60° (1967) 4.83" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 23° 37° -5° (1985) 53° (1949) 0.16" NA
Dec 2 23° 36° -3° (1985) 55° (1953) 0.16" NA
Dec 3 23° 36° 6° (1955) 51° (1958) 0.16" NA
Dec 4 22° 36° 0° (1972) 48° (1965) 0.16" NA
Dec 5 22° 36° -1° (1984) 46° (1993) 0.16" NA
Dec 6 22° 35° -8° (1956) 47° (1965) 0.16" NA
Dec 7 21° 35° -8° (1956) 48° (1973) 0.16" NA
Dec 8 21° 35° -10° (1972) 48° (1965) 0.16" NA
Dec 9 21° 35° -3° (1972) 48° (1989) 0.16" NA
Dec 10 21° 34° -2° (1972) 46° (1991) 0.16" NA
Dec 11 20° 34° -2° (1963) 46° (1950) 0.16" NA
Dec 12 20° 34° -1° (1963) 49° (2004) 0.16" NA
Dec 13 20° 34° -1° (1963) 52° (1956) 0.16" NA
Dec 14 20° 34° -9° (1955) 47° (1956) 0.16" NA
Dec 15 19° 34° -5° (1955) 50° (1979) 0.16" NA
Dec 16 19° 33° -14° (1964) 52° (1956) 0.16" NA
Dec 17 19° 33° -22° (1964) 53° (1999) 0.16" NA
Dec 18 19° 33° -18° (1964) 54° (1998) 0.16" NA
Dec 19 19° 33° -2° (1984) 51° (1999) 0.15" NA
Dec 20 18° 33° 1° (1984) 50° (1999) 0.15" NA
Dec 21 18° 33° -18° (1983) 55° (1962) 0.15" NA
Dec 22 18° 33° -23° (1983) 48° (1962) 0.15" NA
Dec 23 18° 33° -25° (1983) 52° (1992) 0.15" NA
Dec 24 18° 32° -25° (1983) 49° (1992) 0.15" NA
Dec 25 18° 32° -24° (1983) 46° (1992) 0.15" NA
Dec 26 17° 32° -9° (1948) 51° (1953) 0.15" NA
Dec 27 17° 32° -11° (1948) 60° (1967) 0.15" NA
Dec 28 17° 32° -1° (1955) 54° (1967) 0.15" NA
Dec 29 17° 32° -22° (1968) 44° (1980) 0.15" NA
Dec 30 17° 32° -36° (1968) 51° (1966) 0.15" NA
Dec 31 17° 32° -17° (1968) 54° (1966) 0.15" NA
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