Walla Walla, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -1° -27.8° (1957) 21.1° (1968) 2.53" 1.9"
February -26.7° (1950) 23.9° (1995) 1.83" 3.1"
March 13° -15.6° (1993) 26.1° (1964) 2.3" 1"
April 17° -6.7° (1966) 35.6° (1977) 1.92" 0.1"
May 21° -3.3° (1954) 37.8° (1983) 2.13" 0"
June 12° 26° 2.2° (1966) 41.7° (1992) 1.28" 0"
July 16° 32° 4.4° (1971) 45.6° (1975) 0.59" 0"
August 16° 31° 5.6° (1992) 45.6° (1961) 0.57" 0"
September 11° 26° 0° (1985) 40° (1950) 0.75" 0"
October 18° -7.2° (1971) 31.7° (1958) 1.68" 0.1"
November -23.9° (1985) 26.7° (1975) 2.87" 1.2"
December -2° -31.1° (1968) 20° (1980) 2.47" 4.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 17° 33° 10° (1987) 41° (1977) 0.02" 0"
Aug 2 17° 33° 10° (1957) 43° (1994) 0.01" 0"
Aug 3 17° 33° 11° (1956) 42° (1961) 0.02" 0"
Aug 4 17° 33° 10° (1954) 46° (1961) 0.02" 0"
Aug 5 17° 33° 12° (1956) 42° (1990) 0.02" 0"
Aug 6 17° 33° 9° (1969) 41° (1972) 0.01" 0"
Aug 7 17° 33° 12° (1976) 42° (1972) 0.01" 0"
Aug 8 17° 32° 12° (1969) 42° (1972) 0.02" 0"
Aug 9 17° 32° 12° (1955) 41° (1981) 0.02" 0"
Aug 10 17° 32° 12° (1964) 40° (1967) 0.02" 0"
Aug 11 17° 32° 12° (2007) 43° (1984) 0.01" 0"
Aug 12 16° 32° 12° (1957) 41° (1973) 0.02" 0"
Aug 13 16° 32° 12° (1955) 41° (1992) 0.02" 0"
Aug 14 16° 32° 12° (1964) 39° (1992) 0.02" 0"
Aug 15 16° 32° 11° (1960) 41° (1967) 0.02" 0"
Aug 16 16° 31° 9° (1976) 41° (1967) 0.02" 0"
Aug 17 16° 31° 11° (1969) 43° (1977) 0.02" 0"
Aug 18 16° 31° 10° (1973) 42° (1981) 0.02" 0"
Aug 19 16° 31° 8° (1975) 39° (1967) 0.01" 0"
Aug 20 15° 31° 9° (1952) 42° (2009) 0.02" 0"
Aug 21 15° 31° 10° (1988) 38° (1956) 0.02" 0"
Aug 22 15° 30° 9° (1992) 40° (1970) 0.02" 0"
Aug 23 15° 30° 7° (1992) 39° (1970) 0.02" 0"
Aug 24 15° 30° 6° (1992) 38° (1958) 0.02" 0"
Aug 25 15° 30° 8° (1992) 39° (1958) 0.02" 0"
Aug 26 15° 30° 7° (1993) 37° (1972) 0.02" 0"
Aug 27 14° 30° 9° (1954) 42° (1986) 0.02" 0"
Aug 28 14° 29° 7° (1960) 40° (1972) 0.02" 0"
Aug 29 14° 29° 7° (1980) 39° (1967) 0.02" 0"
Aug 30 14° 29° 8° (1952) 40° (1967) 0.02" 0"
Aug 31 14° 29° 8° (1964) 39° (1967) 0.02" 0"
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