Walla Walla Weather in August
Average highs run from 92°F on August 1 to 84°F on August 31, and lows from 64°F to 58°F. Normal precipitation for the month is 0.40 in over about 3 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 89°F
- Average low
- 62°F
- Precipitation
- 0.40 in
- Record high
- 114°FAug 4, 1961
- Record low
- 42°FAug 24, 1992
- Chance of a freeze
- 0%
- Days of 90°F or more
- 15.8
- Daylight
- 14 h 47 min to 13 h 20 min
- Cloud cover
- 31%
- Humidity
- 42%
- Dew point
- 47°F
- Wind
- 7.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 92°F | 64°F | 108°F 2009 | 50°F 1987 | 8% | 0% |
| Aug 2 | 92°F | 64°F | 109°F 1994 | 50°F 1957 | 8% | 0% |
| Aug 3 | 92°F | 64°F | 107°F 1961 | 50°F 2002 | 8% | 0% |
| Aug 4 | 92°F | 64°F | 114°F 1961 | 50°F 1954 | 8% | 0% |
| Aug 5 | 92°F | 64°F | 108°F 1990 | 47°F 2002 | 8% | 0% |
| Aug 6 | 91°F | 64°F | 105°F 1972 | 48°F 1969 | 8% | 0% |
| Aug 7 | 91°F | 64°F | 108°F 1972 | 49°F 2002 | 8% | 0% |
| Aug 8 | 91°F | 64°F | 108°F 1972 | 51°F 1949 | 8% | 0% |
| Aug 9 | 91°F | 64°F | 105°F 1981 | 52°F 1949 | 8% | 0% |
| Aug 10 | 91°F | 63°F | 104°F 1967 | 54°F 1964 | 8% | 0% |
| Aug 11 | 90°F | 63°F | 109°F 1984 | 53°F 2007 | 8% | 0% |
| Aug 12 | 90°F | 63°F | 105°F 1973 | 53°F 1957 | 8% | 0% |
| Aug 13 | 90°F | 63°F | 106°F 1992 | 52°F 1949 | 8% | 0% |
| Aug 14 | 89°F | 62°F | 103°F 1992 | 50°F 1949 | 8% | 0% |
| Aug 15 | 89°F | 62°F | 105°F 1967 | 51°F 1960 | 8% | 0% |
| Aug 16 | 89°F | 62°F | 106°F 1967 | 49°F 1976 | 8% | 0% |
| Aug 17 | 89°F | 62°F | 110°F 1977 | 51°F 1969 | 8% | 0% |
| Aug 18 | 88°F | 61°F | 107°F 1981 | 50°F 1973 | 8% | 0% |
| Aug 19 | 88°F | 61°F | 103°F 1967 | 47°F 1975 | 8% | 0% |
| Aug 20 | 88°F | 61°F | 107°F 2009 | 49°F 1952 | 8% | 0% |
| Aug 21 | 87°F | 61°F | 100°F 1956 | 50°F 1988 | 8% | 0% |
| Aug 22 | 87°F | 60°F | 104°F 1970 | 48°F 1992 | 8% | 0% |
| Aug 23 | 87°F | 60°F | 102°F 1970 | 45°F 1992 | 8% | 0% |
| Aug 24 | 86°F | 60°F | 101°F 1958 | 42°F 1992 | 8% | 0% |
| Aug 25 | 86°F | 60°F | 103°F 1958 | 46°F 1992 | 9% | 0% |
| Aug 26 | 86°F | 59°F | 99°F 1972 | 45°F 1993 | 9% | 0% |
| Aug 27 | 85°F | 59°F | 107°F 1986 | 48°F 1954 | 9% | 0% |
| Aug 28 | 85°F | 59°F | 104°F 1972 | 45°F 1960 | 9% | 0% |
| Aug 29 | 85°F | 59°F | 102°F 1967 | 45°F 1980 | 9% | 0% |
| Aug 30 | 85°F | 58°F | 104°F 1967 | 47°F 1952 | 9% | 0% |
| Aug 31 | 84°F | 58°F | 103°F 1967 | 46°F 1964 | 9% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 5:36 AM, sunset 8:23 PM
- August 31
- sunrise 6:13 AM, sunset 7:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024160 (Walla Walla Rgnl AP), public domain. Records: NOAA GHCN-Daily, station USW00024160, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.