Mason City, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 33° -33° (1950) 60° (1971) 1.2" NA
February 22° 41° -30° (1950) 66° (1982) 1.1" NA
March 27° 52° -4° (1951) 79° (1931) 1.1" NA
April 33° 63° 14° (1982) 93° (1977) 1" NA
May 40° 71° 17° (1954) 97° (1983) 1.3" NA
June 46° 81° 28° (1952) 101° (1970) 0.9" NA
July 50° 88° 30° (1984) 107° (1944) 0.6" NA
August 50° 88° 29° (1960) 110° (1961) 0.7" NA
September 42° 78° 22° (1984) 102° (1988) 0.7" NA
October 33° 64° 6° (1984) 88° (1943) 0.8" NA
November 27° 45° -18° (1985) 70° (1967) 1.7" NA
December 20° 34° -23° (1968) 58° (1939) 1.9" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 23° 38° 4° (1931) 55° (1951) 0.1" NA
Dec 2 23° 38° -1° (1950) 55° (1941) 0.1" NA
Dec 3 23° 38° 0° (1972) 52° (1975) 0.1" NA
Dec 4 22° 37° -3° (1984) 54° (1941) 0.1" NA
Dec 5 22° 37° -3° (1950) 53° (1941) 0.1" NA
Dec 6 22° 37° -2° (1956) 55° (1941) 0.1" NA
Dec 7 21° 36° -2° (1956) 56° (1941) 0.1" NA
Dec 8 21° 36° -9° (1972) 51° (1939) 0.1" NA
Dec 9 21° 36° -4° (1972) 54° (1939) 0.1" NA
Dec 10 21° 36° -11° (1961) 58° (1939) 0.1" NA
Dec 11 20° 35° -6° (1932) 50° (1939) 0.1" NA
Dec 12 20° 35° -11° (1931) 50° (1969) 0.1" NA
Dec 13 20° 35° -3° (1972) 51° (1937) 0.1" NA
Dec 14 20° 34° -8° (1955) 48° (1979) 0.1" NA
Dec 15 19° 34° -5° (1931) 54° (1959) 0.1" NA
Dec 16 19° 34° -18° (1964) 52° (1941) 0.1" NA
Dec 17 19° 33° -21° (1964) 58° (1939) 0.1" NA
Dec 18 18° 33° -8° (1964) 55° (1936) 0.1" NA
Dec 19 18° 33° -8° (1984) 53° (1936) 0.1" NA
Dec 20 18° 33° -12° (1949) 51° (1933) 0.1" NA
Dec 21 18° 32° -13° (1983) 57° (1933) 0.1" NA
Dec 22 17° 32° -15° (1970) 55° (1936) 0.1" NA
Dec 23 17° 32° -19° (1983) 52° (1936) 0.1" NA
Dec 24 17° 31° -16° (1948) 45° (1961) 0.1" NA
Dec 25 17° 31° -13° (1948) 48° (1936) 0.1" NA
Dec 26 16° 31° -14° (1948) 49° (1972) 0.1" NA
Dec 27 16° 30° -15° (1948) 48° (1972) 0.1" NA
Dec 28 16° 30° -4° (1948) 49° (1953) 0.1" NA
Dec 29 15° 30° -2° (1978) 49° (1949) 0.1" NA
Dec 30 15° 29° -23° (1968) 47° (1980) 0.1" NA
Dec 31 15° 29° -15° (1968) 46° (1962) 0.1" NA
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