Walla Walla, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° 41° -18° (1957) 70° (1968) 2.25" 5.8"
February 33° 47° -16° (1950) 75° (1995) 1.97" 3.9"
March 37° 56° 4° (1993) 79° (1964) 2.2" 1.1"
April 41° 64° 20° (1966) 96° (1977) 1.83" 0"
May 48° 72° 26° (1954) 100° (1983) 1.95" 0"
June 54° 80° 36° (1966) 107° (1992) 1.15" 0"
July 61° 90° 40° (1971) 114° (1975) 0.73" 0"
August 61° 89° 42° (1992) 114° (1961) 0.84" 0"
September 53° 79° 32° (1985) 104° (1950) 0.83" 0"
October 44° 66° 19° (1971) 89° (1958) 1.77" 0.3"
November 36° 50° -11° (1985) 80° (1975) 2.85" 2.4"
December 29° 41° -24° (1968) 68° (1980) 2.51" 6.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 58° 85° 44° (1999) 99° (1987) 0.03" NA
Sep 2 57° 84° 44° (1999) 104° (1950) 0.03" NA
Sep 3 57° 84° 44° (1958) 96° (1993) 0.03" NA
Sep 4 57° 84° 44° (1956) 97° (1966) 0.02" NA
Sep 5 56° 83° 44° (1956) 99° (1955) 0.02" NA
Sep 6 56° 83° 45° (1960) 102° (1955) 0.02" NA
Sep 7 56° 83° 44° (1960) 98° (1958) 0.02" NA
Sep 8 55° 82° 39° (1962) 102° (1981) 0.02" NA
Sep 9 55° 82° 43° (1962) 97° (1963) 0.02" NA
Sep 10 55° 82° 43° (1964) 99° (1990) 0.02" NA
Sep 11 54° 81° 43° (1999) 97° (1953) 0.02" NA
Sep 12 54° 81° 41° (1964) 93° (1953) 0.02" NA
Sep 13 54° 80° 38° (1970) 92° (1959) 0.03" NA
Sep 14 53° 80° 39° (1970) 93° (1953) 0.03" NA
Sep 15 53° 80° 39° (1970) 98° (1979) 0.03" NA
Sep 16 53° 79° 35° (1965) 97° (1981) 0.03" NA
Sep 17 52° 79° 32° (1965) 97° (1981) 0.03" NA
Sep 18 52° 78° 36° (1965) 97° (1981) 0.03" NA
Sep 19 52° 78° 33° (1957) 92° (1994) 0.03" NA
Sep 20 51° 78° 37° (1983) 92° (1967) 0.03" NA
Sep 21 51° 77° 39° (1971) 94° (1967) 0.03" NA
Sep 22 51° 77° 37° (1993) 90° (1999) 0.03" NA
Sep 23 50° 76° 33° (2000) 90° (1952) 0.03" NA
Sep 24 50° 76° 37° (2000) 95° (1952) 0.03" NA
Sep 25 50° 76° 37° (1970) 99° (1952) 0.03" NA
Sep 26 50° 75° 38° (1972) 92° (1952) 0.03" NA
Sep 27 49° 75° 35° (1972) 90° (1967) 0.03" NA
Sep 28 49° 74° 34° (1985) 90° (1967) 0.03" NA
Sep 29 49° 74° 32° (1985) 90° (1976) 0.04" NA
Sep 30 48° 73° 35° (1950) 89° (1976) 0.04" NA
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