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
Jul 1 14.4° 30° 8° (1955) 37° (1987) 0.03" NA
Jul 2 14.4° 30° 6° (1955) 39° (1967) 0.03" NA
Jul 3 15° 30.6° 6° (1962) 41° (1970) 0.03" NA
Jul 4 15° 30.6° 9° (1986) 41° (1968) 0.03" NA
Jul 5 15° 30.6° 9° (1999) 41° (1968) 0.03" NA
Jul 6 15° 31.1° 7° (1952) 41° (1968) 0.03" NA
Jul 7 15° 31.1° 4° (1971) 41° (1985) 0.03" NA
Jul 8 15.6° 31.7° 8° (1981) 43° (1985) 0.03" NA
Jul 9 15.6° 31.7° 11° (1963) 45° (1975) 0.02" NA
Jul 10 15.6° 31.7° 9° (1974) 46° (1975) 0.02" NA
Jul 11 15.6° 31.7° 10° (1950) 43° (1990) 0.02" NA
Jul 12 15.6° 32.2° 8° (1971) 42° (1990) 0.02" NA
Jul 13 16.1° 32.2° 9° (1993) 40° (1961) 0.02" NA
Jul 14 16.1° 32.2° 11° (1962) 40° (1955) 0.02" NA
Jul 15 16.1° 32.2° 9° (2000) 42° (1970) 0.02" NA
Jul 16 16.1° 32.2° 9° (1974) 41° (1984) 0.02" NA
Jul 17 16.1° 32.8° 11° (1987) 42° (1960) 0.02" NA
Jul 18 16.1° 32.8° 9° (1991) 43° (1960) 0.02" NA
Jul 19 16.1° 32.8° 9° (1962) 41° (1979) 0.02" NA
Jul 20 16.7° 32.8° 12° (1972) 43° (1985) 0.02" NA
Jul 21 16.7° 32.8° 11° (1954) 42° (1994) 0.02" NA
Jul 22 16.7° 32.8° 9° (1982) 44° (1994) 0.02" NA
Jul 23 16.7° 32.8° 9° (1963) 41° (1978) 0.02" NA
Jul 24 16.7° 32.8° 11° (1953) 43° (1994) 0.02" NA
Jul 25 16.7° 33.3° 11° (1966) 42° (1984) 0.02" NA
Jul 26 16.7° 33.3° 11° (1992) 41° (1982) 0.02" NA
Jul 27 16.7° 33.3° 12° (1959) 41° (1968) 0.02" NA
Jul 28 16.7° 33.3° 9° (1954) 42° (1974) 0.02" NA
Jul 29 16.7° 33.3° 11° (1954) 41° (1960) 0.03" NA
Jul 30 16.7° 33.3° 12° (1950) 42° (1971) 0.03" NA
Jul 31 16.7° 33.3° 12° (1964) 44° (1971) 0.03" NA
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