August weather in Walla Walla, WA
The average temperature in Walla Walla in August is 75.2°F (61.7°F–88.6°F). Average precipitation: 0.40 inches.
August is a summer month in Walla Walla, and is warmer than the annual average of 54.3°F. Daily temperatures swing about 26.9°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 13h 58m. For travel, August is hot.
Avg High
88.6°F
Avg Low
61.7°F
Precipitation
0.40 in
Daylight
13h 58m
August records in Walla Walla
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 108.0°F (2009) | 50.0°F (1987) | 0.78 in (1960) |
| August 2 | 109.0°F (1994) | 50.0°F (1957) | 0.23 in (1985) |
| August 3 | 107.1°F (1961) | 50.0°F (2002) | 0.36 in (1962) |
| August 4 | 114.1°F (1961) | 50.0°F (1954) | 0.15 in (1985) |
| August 5 | 108.0°F (1990) | 46.9°F (2002) | 0.13 in (2003) |
| August 6 | 105.1°F (1972) | 48.0°F (1969) | 0.31 in (1976) |
| August 7 | 108.0°F (1972) | 48.9°F (2002) | 0.75 in (2009) |
| August 8 | 108.0°F (1972) | 51.1°F (1949) | 0.10 in (2016) |
| August 9 | 105.1°F (1981) | 52.0°F (1949) | 0.35 in (1989) |
| August 10 | 104.0°F (1967) | 54.0°F (1964) | 1.38 in (1985) |
| August 11 | 109.0°F (1984) | 53.1°F (2007) | 0.40 in (1965) |
| August 12 | 105.1°F (1973) | 53.1°F (1957) | 0.27 in (1965) |
| August 13 | 106.0°F (1992) | 52.0°F (1949) | 0.32 in (1979) |
| August 14 | 102.9°F (1992) | 50.0°F (1949) | 0.59 in (1979) |
| August 15 | 105.1°F (1967) | 51.1°F (1960) | 1.16 in (1978) |
| August 16 | 106.0°F (1967) | 48.9°F (1976) | 1.54 in (1993) |
| August 17 | 109.9°F (1977) | 51.1°F (1969) | 0.30 in (1980) |
| August 18 | 107.1°F (1981) | 50.0°F (1973) | 0.35 in (1975) |
| August 19 | 102.9°F (1967) | 46.9°F (1975) | 0.60 in (2007) |
| August 20 | 107.1°F (2009) | 48.9°F (1952) | 1.04 in (1959) |
| August 21 | 100.0°F (1956) | 50.0°F (1988) | 0.90 in (1990) |
| August 22 | 104.0°F (1970) | 48.0°F (1992) | 2.29 in (1992) |
| August 23 | 102.0°F (1970) | 45.0°F (1992) | 0.42 in (1975) |
| August 24 | 100.9°F (1958) | 42.1°F (1992) | 0.89 in (1977) |
| August 25 | 102.9°F (1958) | 46.0°F (1992) | 1.39 in (1965) |
| August 26 | 99.0°F (1972) | 45.0°F (1993) | 0.72 in (1956) |
| August 27 | 107.1°F (1986) | 48.0°F (1954) | 0.38 in (1956) |
| August 28 | 104.0°F (1972) | 45.0°F (1960) | 0.51 in (1953) |
| August 29 | 102.0°F (1967) | 45.0°F (1980) | 0.66 in (1977) |
| August 30 | 104.0°F (1967) | 46.9°F (1952) | 0.97 in (1977) |
| August 31 | 102.9°F (1967) | 46.0°F (1964) | 0.43 in (1961) |