Dayton, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° 40° -22° (1950) 69° (1968) 2.31" NA
February 29° 46° -22° (1950) 74° (1995) 1.87" NA
March 34° 54° 5° (1989) 79° (2004) 2.02" NA
April 39° 61° 17° (1936) 93° (1946) 1.67" NA
May 45° 69° 23° (1954) 101° (1983) 1.62" NA
June 50° 77° 29° (1951) 107° (1961) 1.2" NA
July 55° 87° 34° (1952) 109° (1975) 0.57" NA
August 55° 87° 34° (1952) 114° (1961) 0.73" NA
September 48° 77° 24° (1954) 105° (1953) 0.89" NA
October 39° 64° 7° (1935) 92° (1943) 1.53" NA
November 33° 49° -10° (1985) 80° (1965) 2.67" NA
December 27° 40° -25° (1968) 69° (1939) 2.47" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 29° 43° -6° (1985) 64° (1941) 0.09" NA
Dec 2 29° 43° -6° (1985) 65° (1941) 0.09" NA
Dec 3 29° 43° 7° (1985) 65° (1939) 0.09" NA
Dec 4 29° 42° 0° (1972) 65° (1939) 0.09" NA
Dec 5 29° 42° 0° (1972) 69° (1939) 0.08" NA
Dec 6 28° 42° 7° (1972) 60° (1954) 0.08" NA
Dec 7 28° 42° 6° (1978) 62° (1987) 0.08" NA
Dec 8 28° 42° -8° (1972) 63° (1939) 0.08" NA
Dec 9 28° 41° -11° (1972) 60° (1957) 0.08" NA
Dec 10 28° 41° -11° (1972) 65° (1939) 0.08" NA
Dec 11 27° 41° -9° (1932) 64° (1993) 0.08" NA
Dec 12 27° 41° 0° (1932) 63° (2004) 0.08" NA
Dec 13 27° 41° -2° (1972) 64° (1995) 0.08" NA
Dec 14 27° 40° -1° (1932) 63° (1969) 0.08" NA
Dec 15 27° 40° -4° (1972) 66° (2002) 0.08" NA
Dec 16 27° 40° -7° (1964) 63° (1942) 0.08" NA
Dec 17 26° 40° -11° (1964) 58° (1997) 0.08" NA
Dec 18 26° 40° -9° (1964) 60° (1976) 0.08" NA
Dec 19 26° 40° -4° (1984) 60° (1936) 0.08" NA
Dec 20 26° 40° -9° (1990) 58° (1994) 0.08" NA
Dec 21 26° 40° -17° (1990) 64° (1933) 0.08" NA
Dec 22 26° 40° -15° (1990) 62° (1940) 0.08" NA
Dec 23 26° 39° -17° (1983) 63° (1950) 0.08" NA
Dec 24 26° 39° -17° (1983) 59° (1947) 0.08" NA
Dec 25 26° 39° -8° (1983) 62° (1971) 0.08" NA
Dec 26 26° 39° 4° (1948) 64° (1980) 0.07" NA
Dec 27 26° 39° 10° (1983) 68° (1980) 0.07" NA
Dec 28 26° 39° 7° (1946) 59° (1937) 0.07" NA
Dec 29 26° 39° -21° (1990) 58° (1949) 0.07" NA
Dec 30 26° 39° -25° (1968) 59° (1938) 0.07" NA
Dec 31 26° 39° -23° (1968) 59° (1938) 0.08" NA
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