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
Dec 1 -1° -19° (1985) 16° (1958) 0.1" 0.1"
Dec 2 -1° -14° (1985) 18° (1958) 0.09" 0.1"
Dec 3 -1° -9° (1985) 19° (2007) 0.09" 0.1"
Dec 4 -1° -16° (1972) 18° (1975) 0.09" 0.2"
Dec 5 -1° -15° (1972) 16° (1954) 0.09" 0.1"
Dec 6 -1° -14° (1956) 17° (1987) 0.09" 0.1"
Dec 7 -2° -19° (1972) 15° (1962) 0.08" 0.2"
Dec 8 -2° -22° (1972) 19° (1975) 0.08" 0.1"
Dec 9 -2° -23° (1972) 17° (1987) 0.09" 0.1"
Dec 10 -2° -23° (1972) 18° (1993) 0.07" 0.1"
Dec 11 -2° -20° (1972) 17° (1955) 0.08" 0.2"
Dec 12 -2° -18° (1972) 15° (1988) 0.07" 0.1"
Dec 13 -2° -19° (1972) 17° (1969) 0.08" 0.1"
Dec 14 -2° -18° (1972) 16° (1969) 0.07" 0.2"
Dec 15 -2° -18° (1972) 17° (1959) 0.08" 0.2"
Dec 16 -2° -21° (1964) 17° (1973) 0.08" 0.1"
Dec 17 -2° -22° (1964) 17° (1994) 0.07" 0.2"
Dec 18 -2° -18° (1964) 16° (1994) 0.08" 0.1"
Dec 19 -3° -17° (1984) 15° (1994) 0.08" 0.2"
Dec 20 -3° -24° (1990) 18° (1994) 0.08" 0.1"
Dec 21 -3° -26° (1990) 17° (1955) 0.08" 0.2"
Dec 22 -3° -23° (1983) 16° (1950) 0.08" 0.1"
Dec 23 -3° -26° (1983) 18° (1950) 0.07" 0.2"
Dec 24 -3° -25° (1983) 15° (1950) 0.08" 0.2"
Dec 25 -3° -15° (1990) 18° (1980) 0.07" 0.1"
Dec 26 -2° -11° (1983) 20° (1980) 0.08" 0.2"
Dec 27 -2° -11° (1983) 19° (1980) 0.08" 0.1"
Dec 28 -2° -22° (1990) 16° (1965) 0.07" 0.2"
Dec 29 -2° -27° (1968) 19° (2008) 0.07" 0.1"
Dec 30 -2° -31° (1968) 16° (2008) 0.07" 0.1"
Dec 31 -2° -23° (1968) 16° (1958) 0.08" 0.2"
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