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
May 1 44° 68° 26° (1954) 81° (1976) 0.06" NA
May 2 45° 68° 32° (1954) 82° (1966) 0.06" NA
May 3 45° 69° 36° (1950) 89° (1966) 0.06" NA
May 4 45° 69° 34° (1962) 93° (1966) 0.06" NA
May 5 45° 69° 34° (1965) 95° (1966) 0.07" NA
May 6 45° 69° 36° (2001) 93° (1992) 0.07" NA
May 7 46° 70° 37° (2000) 91° (1987) 0.07" NA
May 8 46° 70° 37° (1999) 93° (1987) 0.07" NA
May 9 46° 70° 36° (1999) 90° (1994) 0.07" NA
May 10 46° 71° 34° (1999) 89° (1951) 0.07" NA
May 11 47° 71° 36° (1985) 91° (1988) 0.07" NA
May 12 47° 71° 37° (1985) 95° (1988) 0.07" NA
May 13 47° 71° 38° (1955) 92° (1959) 0.07" NA
May 14 47° 72° 35° (1955) 99° (1973) 0.07" NA
May 15 47° 72° 38° (1974) 94° (1973) 0.07" NA
May 16 48° 72° 36° (1974) 89° (1973) 0.06" NA
May 17 48° 72° 37° (1971) 92° (1985) 0.06" NA
May 18 48° 73° 37° (1971) 92° (1954) 0.06" NA
May 19 48° 73° 39° (1976) 87° (1956) 0.06" NA
May 20 48° 73° 35° (1987) 90° (1958) 0.06" NA
May 21 49° 73° 36° (1971) 90° (1958) 0.06" NA
May 22 49° 74° 35° (1960) 95° (1979) 0.06" NA
May 23 49° 74° 38° (1950) 95° (2001) 0.06" NA
May 24 49° 74° 40° (1950) 93° (1992) 0.06" NA
May 25 50° 74° 38° (1978) 95° (1966) 0.06" NA
May 26 50° 74° 37° (1967) 93° (1958) 0.06" NA
May 27 50° 75° 39° (1955) 94° (1983) 0.06" NA
May 28 50° 75° 41° (1954) 100° (1983) 0.06" NA
May 29 50° 75° 37° (1951) 99° (1983) 0.06" NA
May 30 51° 75° 40° (1950) 95° (1986) 0.05" NA
May 31 51° 76° 39° (1966) 99° (1986) 0.05" NA
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