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
May 1 42° 65° 23° (1954) 87° (1998) 0.06" NA
May 2 42° 66° 23° (1954) 88° (1937) 0.06" NA
May 3 42° 66° 32° (1953) 91° (1937) 0.06" NA
May 4 42° 66° 29° (1962) 87° (1966) 0.06" NA
May 5 42° 66° 29° (1937) 94° (1966) 0.06" NA
May 6 43° 67° 31° (1938) 98° (1966) 0.06" NA
May 7 43° 67° 30° (1984) 94° (1992) 0.06" NA
May 8 43° 67° 30° (2002) 93° (1987) 0.05" NA
May 9 43° 67° 29° (1955) 90° (1940) 0.05" NA
May 10 44° 68° 29° (1999) 93° (1936) 0.05" NA
May 11 44° 68° 30° (1953) 92° (1941) 0.05" NA
May 12 44° 68° 26° (1985) 95° (1993) 0.05" NA
May 13 44° 68° 33° (1956) 96° (1993) 0.05" NA
May 14 44° 69° 28° (1955) 94° (1931) 0.05" NA
May 15 45° 69° 33° (1932) 94° (1973) 0.05" NA
May 16 45° 69° 31° (1974) 88° (1973) 0.05" NA
May 17 45° 69° 34° (1984) 90° (1956) 0.05" NA
May 18 45° 70° 33° (1971) 92° (1954) 0.05" NA
May 19 45° 70° 32° (1931) 90° (1958) 0.05" NA
May 20 46° 70° 32° (1944) 86° (1993) 0.05" NA
May 21 46° 70° 32° (1973) 91° (1942) 0.05" NA
May 22 46° 71° 29° (1960) 91° (1951) 0.05" NA
May 23 46° 71° 31° (1964) 94° (1958) 0.05" NA
May 24 46° 71° 34° (1935) 98° (2001) 0.05" NA
May 25 46° 71° 33° (1984) 91° (1947) 0.05" NA
May 26 47° 72° 31° (1995) 99° (1936) 0.05" NA
May 27 47° 72° 35° (1953) 95° (1958) 0.05" NA
May 28 47° 72° 35° (1953) 97° (1934) 0.05" NA
May 29 47° 72° 28° (1951) 101° (1983) 0.05" NA
May 30 47° 72° 27° (1951) 98° (1983) 0.05" NA
May 31 48° 73° 28° (1951) 96° (1986) 0.05" NA
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