Walla Walla, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -2° -27.8° (1957) 21.1° (1968) 2.25" 5.8"
February -26.7° (1950) 23.9° (1995) 1.97" 3.9"
March 13° -15.6° (1993) 26.1° (1964) 2.2" 1.1"
April 18° -6.7° (1966) 35.6° (1977) 1.83" 0"
May 22° -3.3° (1954) 37.8° (1983) 1.95" 0"
June 12° 27° 2.2° (1966) 41.7° (1992) 1.15" 0"
July 16° 32° 4.4° (1971) 45.6° (1975) 0.73" 0"
August 16° 32° 5.6° (1992) 45.6° (1961) 0.84" 0"
September 12° 26° 0° (1985) 40° (1950) 0.83" 0"
October 19° -7.2° (1971) 31.7° (1958) 1.77" 0.3"
November 10° -23.9° (1985) 26.7° (1975) 2.85" 2.4"
December -2° -31.1° (1968) 20° (1980) 2.51" 6.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 3.9° 15.6° -1° (1999) 24° (1992) 0.07" NA
Apr 2 3.9° 16.1° -2° (1953) 28° (1992) 0.07" NA
Apr 3 3.9° 16.1° -1° (1972) 26° (2000) 0.07" NA
Apr 4 3.9° 16.1° -2° (1961) 26° (1960) 0.06" NA
Apr 5 4.4° 16.1° -2° (1961) 28° (1952) 0.06" NA
Apr 6 4.4° 16.7° -2° (1956) 28° (1977) 0.06" NA
Apr 7 4.4° 16.7° -3° (1973) 31° (1977) 0.06" NA
Apr 8 4.4° 16.7° 0° (1952) 26° (1977) 0.06" NA
Apr 9 4.4° 16.7° -1° (1952) 28° (1985) 0.06" NA
Apr 10 4.4° 17.2° -1° (1953) 27° (1985) 0.06" NA
Apr 11 4.4° 17.2° 1° (1954) 25° (1988) 0.06" NA
Apr 12 17.2° -1° (1971) 28° (1988) 0.06" NA
Apr 13 17.2° -3° (1968) 29° (1985) 0.06" NA
Apr 14 17.8° -1° (1999) 29° (1962) 0.06" NA
Apr 15 17.8° -1° (1967) 29° (1984) 0.06" NA
Apr 16 17.8° -1° (1978) 28° (1990) 0.06" NA
Apr 17 17.8° -2° (1964) 28° (1994) 0.06" NA
Apr 18 5.6° 18.3° -3° (1966) 31° (1962) 0.06" NA
Apr 19 5.6° 18.3° -7° (1966) 26° (1956) 0.06" NA
Apr 20 5.6° 18.3° -2° (1951) 29° (1956) 0.06" NA
Apr 21 5.6° 18.9° -3° (1951) 28° (1956) 0.06" NA
Apr 22 5.6° 18.9° 1° (1951) 30° (1977) 0.06" NA
Apr 23 6.1° 18.9° 0° (1972) 34° (1977) 0.06" NA
Apr 24 6.1° 18.9° -1° (1950) 36° (1977) 0.06" NA
Apr 25 6.1° 19.4° 1° (1955) 31° (1977) 0.06" NA
Apr 26 6.1° 19.4° 2° (1970) 28° (1992) 0.06" NA
Apr 27 6.1° 19.4° -1° (1955) 30° (1987) 0.06" NA
Apr 28 6.7° 19.4° 1° (1967) 31° (1987) 0.06" NA
Apr 29 6.7° 20° 1° (1950) 31° (1957) 0.06" NA
Apr 30 6.7° 20° -6° (1972) 29° (1957) 0.06" NA
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