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
Sep 1 46° 83° 34° (1964) 100° (1949) 0" NA
Sep 2 46° 82° 33° (1984) 99° (1950) 0" NA
Sep 3 45° 82° 33° (1973) 100° (1988) 0" NA
Sep 4 45° 82° 34° (1948) 102° (1988) 0" NA
Sep 5 45° 81° 32° (1969) 97° (1988) 0" NA
Sep 6 44° 81° 33° (1931) 99° (1944) 0" NA
Sep 7 44° 81° 30° (1984) 97° (1944) 0" NA
Sep 8 44° 80° 29° (1962) 97° (1944) 0" NA
Sep 9 43° 80° 29° (1960) 99° (1944) 0" NA
Sep 10 43° 79° 28° (1960) 95° (1963) 0" NA
Sep 11 43° 79° 31° (1986) 99° (1944) 0" NA
Sep 12 42° 79° 25° (1949) 97° (1944) 0" NA
Sep 13 42° 78° 30° (1936) 95° (1943) 0" NA
Sep 14 42° 78° 32° (1934) 91° (1960) 0" NA
Sep 15 41° 77° 29° (1936) 93° (1967) 0" NA
Sep 16 41° 77° 24° (1970) 93° (1967) 0" NA
Sep 17 41° 77° 26° (1965) 95° (1981) 0" NA
Sep 18 40° 76° 30° (1942) 97° (1981) 0" NA
Sep 19 40° 76° 27° (1970) 92° (1981) 0" NA
Sep 20 40° 75° 27° (1983) 90° (1939) 0" NA
Sep 21 39° 75° 29° (1932) 91° (1967) 0" NA
Sep 22 39° 74° 29° (1961) 93° (1966) 0" NA
Sep 23 39° 74° 25° (1981) 94° (1966) 0" NA
Sep 24 38° 74° 22° (1984) 91° (1987) 0" NA
Sep 25 38° 73° 22° (1970) 93° (1943) 0" NA
Sep 26 38° 73° 27° (1981) 89° (1952) 0" NA
Sep 27 37° 72° 24° (1950) 89° (1963) 0" NA
Sep 28 37° 72° 22° (1984) 89° (1963) 0" NA
Sep 29 37° 71° 22° (1984) 90° (1963) 0" NA
Sep 30 37° 71° 27° (1984) 86° (1963) 0" NA
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