West Richland Weather in August
Average highs run from 91°F on August 1 to 84°F on August 31, and lows from 61°F to 56°F. Normal precipitation for the month is 0.13 in over about 2 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
- 88°F
- Average low
- 59°F
- Precipitation
- 0.13 in
- Record high
- 113°FAug 5, 1961
- Record low
- 39°FAug 19, 1973
- Chance of a freeze
- 0%
- Days of 90°F or more
- 14.8
- Daylight
- 14 h 49 min to 13 h 21 min
- Cloud cover
- 31%
- Humidity
- 40%
- Dew point
- 46°F
- Wind
- 6.9 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 | 91°F | 61°F | 108°F 1949 | 49°F 2002 | 6% | 0% |
| Aug 2 | 91°F | 61°F | 107°F 1949 | 50°F 1960 | 6% | 0% |
| Aug 3 | 91°F | 61°F | 105°F 1961 | 52°F 1946 | 6% | 0% |
| Aug 4 | 91°F | 61°F | 106°F 1961 | 50°F 1954 | 6% | 0% |
| Aug 5 | 91°F | 61°F | 113°F 1961 | 47°F 1969 | 6% | 0% |
| Aug 6 | 91°F | 61°F | 106°F 1945 | 48°F 1969 | 6% | 0% |
| Aug 7 | 90°F | 61°F | 104°F 1955 | 47°F 1946 | 6% | 0% |
| Aug 8 | 90°F | 61°F | 106°F 1972 | 52°F 1969 | 6% | 0% |
| Aug 9 | 90°F | 61°F | 106°F 1972 | 51°F 1946 | 6% | 0% |
| Aug 10 | 90°F | 60°F | 104°F 1971 | 51°F 2007 | 6% | 0% |
| Aug 11 | 90°F | 60°F | 107°F 1958 | 51°F 2007 | 6% | 0% |
| Aug 12 | 89°F | 60°F | 105°F 1958 | 51°F 1946 | 6% | 0% |
| Aug 13 | 89°F | 60°F | 105°F 1971 | 51°F 1949 | 6% | 0% |
| Aug 14 | 89°F | 60°F | 105°F 1956 | 48°F 1949 | 6% | 0% |
| Aug 15 | 89°F | 60°F | 104°F 1945 | 49°F 1970 | 7% | 0% |
| Aug 16 | 88°F | 59°F | 111°F 2020 | 50°F 1948 | 7% | 0% |
| Aug 17 | 88°F | 59°F | 112°F 2020 | 44°F 1969 | 7% | 0% |
| Aug 18 | 88°F | 59°F | 110°F 2020 | 46°F 1969 | 7% | 0% |
| Aug 19 | 88°F | 59°F | 104°F 1967 | 39°F 1973 | 7% | 0% |
| Aug 20 | 87°F | 58°F | 107°F 1946 | 41°F 1973 | 7% | 0% |
| Aug 21 | 87°F | 58°F | 105°F 1950 | 45°F 1992 | 7% | 0% |
| Aug 22 | 87°F | 58°F | 107°F 1946 | 42°F 1992 | 7% | 0% |
| Aug 23 | 86°F | 58°F | 105°F 1956 | 44°F 1992 | 8% | 0% |
| Aug 24 | 86°F | 57°F | 105°F 1958 | 44°F 1992 | 8% | 0% |
| Aug 25 | 86°F | 57°F | 106°F 1958 | 41°F 1973 | 8% | 0% |
| Aug 26 | 86°F | 57°F | 107°F 1958 | 46°F 1969 | 8% | 0% |
| Aug 27 | 85°F | 57°F | 99°F 2020 | 45°F 1945 | 8% | 0% |
| Aug 28 | 85°F | 56°F | 100°F 1972 | 46°F 1969 | 8% | 0% |
| Aug 29 | 85°F | 56°F | 102°F 1972 | 45°F 1969 | 8% | 0% |
| Aug 30 | 85°F | 56°F | 100°F 1949 | 46°F 1965 | 8% | 0% |
| Aug 31 | 84°F | 56°F | 102°F 1955 | 44°F 1984 | 8% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 5:39 AM, sunset 8:28 PM
- August 31
- sunrise 6:17 AM, sunset 7:38 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00457015 (Richland), public domain. Records: NOAA GHCN-Daily, station USC00457015, 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.