Winthrop, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 30° -32° (1950) 57° (1989) 2" NA
February 18° 38° -28° (1950) 62° (1991) 1.5" NA
March 25° 50° -10° (1955) 77° (1994) 1.05" NA
April 32° 62° 13° (1936) 89° (1977) 0.77" NA
May 39° 71° 20° (1954) 100° (1986) 1.02" NA
June 45° 78° 28° (1976) 100° (1992) 1.06" NA
July 49° 86° 31° (1981) 106° (1939) 0.8" NA
August 48° 86° 30° (1980) 105° (1961) 0.72" NA
September 40° 77° 18° (1983) 100° (1988) 0.61" NA
October 31° 62° 5° (1935) 87° (1958) 0.93" NA
November 24° 41° -17° (1958) 68° (1989) 1.99" NA
December 14° 29° -48° (1968) 54° (1999) 2.6" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 18° 33° -21° (1985) 49° (1951) 0.08" NA
Dec 2 18° 32° -9° (1985) 52° (1932) 0.08" NA
Dec 3 17° 32° -12° (1984) 51° (1958) 0.08" NA
Dec 4 17° 31° -10° (1984) 47° (1943) 0.08" NA
Dec 5 17° 31° -9° (1984) 46° (1943) 0.08" NA
Dec 6 16° 31° -10° (1956) 52° (1979) 0.08" NA
Dec 7 16° 30° -19° (1956) 45° (1943) 0.08" NA
Dec 8 15° 30° -10° (1956) 47° (1940) 0.09" NA
Dec 9 15° 30° -7° (1995) 42° (1940) 0.09" NA
Dec 10 15° 30° -8° (1985) 44° (1956) 0.09" NA
Dec 11 14° 29° -10° (1971) 49° (1939) 0.09" NA
Dec 12 14° 29° -6° (1931) 47° (1953) 0.09" NA
Dec 13 14° 29° -11° (1978) 47° (1995) 0.09" NA
Dec 14 13° 29° -22° (1955) 50° (1979) 0.09" NA
Dec 15 13° 29° -11° (1955) 40° (1979) 0.09" NA
Dec 16 13° 28° -19° (1964) 54° (1999) 0.09" NA
Dec 17 13° 28° -27° (1964) 41° (1956) 0.09" NA
Dec 18 13° 28° -14° (1984) 42° (1999) 0.09" NA
Dec 19 12° 28° -13° (1984) 42° (1999) 0.09" NA
Dec 20 12° 28° -12° (1984) 42° (2004) 0.08" NA
Dec 21 12° 28° -23° (1983) 44° (1962) 0.08" NA
Dec 22 12° 28° -27° (1983) 42° (1978) 0.08" NA
Dec 23 12° 28° -26° (1983) 40° (1994) 0.08" NA
Dec 24 12° 28° -30° (1983) 46° (1992) 0.08" NA
Dec 25 12° 27° -15° (1951) 40° (1959) 0.08" NA
Dec 26 12° 27° -17° (1948) 40° (1932) 0.08" NA
Dec 27 11° 27° -19° (1971) 52° (1967) 0.08" NA
Dec 28 11° 27° -21° (1977) 49° (1967) 0.08" NA
Dec 29 11° 27° -41° (1968) 45° (1949) 0.08" NA
Dec 30 11° 27° -48° (1968) 47° (1980) 0.08" NA
Dec 31 11° 27° -31° (1968) 45° (1950) 0.08" NA
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