Valley, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 34° -38° (1950) 55° (1953) 2.2" 11.4"
February 21° 41° -36° (1950) 62° (1995) 1.76" 6.2"
March 27° 51° -12° (1951) 75° (1994) 2.08" 0.9"
April 32° 60° 17° (1979) 91° (1987) 1.65" 0.2"
May 39° 69° 16° (1954) 100° (1986) 1.96" 0"
June 45° 76° 26° (1952) 106° (1992) 1.77" 0"
July 48° 85° 31° (1962) 107° (2006) 1.06" 0"
August 46° 86° 29° (1973) 110° (1961) 0.78" 0"
September 38° 76° 19° (1950) 104° (1988) 0.82" 0"
October 30° 59° 5° (2002) 92° (1992) 1.17" 0"
November 26° 41° -19° (1985) 69° (1949) 2.81" 3"
December 18° 32° -29° (1978) 58° (1980) 2.54" 13.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 43° 81° 30° (1959) 101° (1967) 0.02" 0"
Sep 2 42° 81° 28° (1959) 104° (1988) 0.02" 0"
Sep 3 42° 80° 26° (1956) 103° (1988) 0.03" 0"
Sep 4 42° 80° 28° (1956) 99° (1988) 0.02" 0"
Sep 5 42° 80° 25° (1956) 101° (1988) 0.03" 0"
Sep 6 41° 79° 27° (1956) 97° (1955) 0.03" 0"
Sep 7 41° 79° 28° (1992) 96° (1990) 0.02" 0"
Sep 8 41° 79° 22° (1962) 96° (1958) 0.03" 0"
Sep 9 40° 78° 25° (1959) 96° (1981) 0.03" 0"
Sep 10 40° 78° 27° (1959) 94° (1963) 0.02" 0"
Sep 11 40° 77° 27° (1964) 96° (1987) 0.03" 0"
Sep 12 39° 77° 22° (1970) 96° (1990) 0.03" 0"
Sep 13 39° 77° 23° (1949) 93° (1988) 0.02" 0"
Sep 14 39° 76° 23° (1961) 93° (1948) 0.03" 0"
Sep 15 38° 76° 21° (1970) 93° (1957) 0.03" 0"
Sep 16 38° 76° 21° (1970) 95° (1981) 0.03" 0"
Sep 17 38° 75° 23° (1965) 97° (1981) 0.03" 0"
Sep 18 37° 75° 26° (1971) 100° (1981) 0.03" 0"
Sep 19 37° 74° 23° (1957) 93° (1952) 0.02" 0"
Sep 20 37° 74° 24° (1958) 93° (1979) 0.03" 0"
Sep 21 36° 74° 23° (1960) 91° (1987) 0.03" 0"
Sep 22 36° 73° 20° (1956) 94° (1987) 0.03" 0"
Sep 23 36° 73° 23° (2000) 96° (1987) 0.03" 0"
Sep 24 35° 72° 22° (1970) 94° (1990) 0.03" 0"
Sep 25 35° 72° 21° (1970) 90° (1952) 0.03" 0"
Sep 26 34° 71° 25° (1955) 94° (1952) 0.03" 0"
Sep 27 34° 71° 23° (1961) 91° (1952) 0.03" 0"
Sep 28 34° 70° 19° (1950) 89° (1949) 0.03" 0"
Sep 29 33° 70° 22° (1999) 88° (1967) 0.02" 0"
Sep 30 33° 69° 22° (1984) 87° (1992) 0.03" 0"
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