Richland Weather in August
Average highs run from 92°F on August 1 to 91°F on August 31, and lows from 68°F to 66°F. Normal precipitation for the month is 3.63 in over about 8 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
- 92°F
- Average low
- 67°F
- Precipitation
- 3.63 in
- Record high
- 104°FAug 10, 2007
- Record low
- 57°FAug 5, 1950
- Chance of a freeze
- 0%
- Days of 90°F or more
- 20.0
- Daylight
- 13 h 42 min to 12 h 51 min
- Cloud cover
- 56%
- Humidity
- 72%
- Dew point
- 70°F
- Wind
- 5.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 92°F | 68°F | 103°F 1986 | 62°F 1997 | 27% |
| Aug 2 | 92°F | 68°F | 100°F 1986 | 65°F 1966 | 27% |
| Aug 3 | 92°F | 68°F | 101°F 2011 | 62°F 1965 | 27% |
| Aug 4 | 92°F | 68°F | 99°F 1954 | 62°F 1950 | 27% |
| Aug 5 | 92°F | 68°F | 99°F 2011 | 57°F 1950 | 27% |
| Aug 6 | 92°F | 68°F | 100°F 1980 | 60°F 1948 | 27% |
| Aug 7 | 92°F | 68°F | 100°F 1980 | 58°F 1950 | 27% |
| Aug 8 | 92°F | 68°F | 100°F 2006 | 61°F 1950 | 27% |
| Aug 9 | 92°F | 68°F | 100°F 2007 | 61°F 1950 | 27% |
| Aug 10 | 92°F | 68°F | 104°F 2007 | 62°F 1953 | 27% |
| Aug 11 | 92°F | 68°F | 103°F 2007 | 63°F 1954 | 27% |
| Aug 12 | 92°F | 68°F | 101°F 1999 | 65°F 1989 | 27% |
| Aug 13 | 92°F | 68°F | 98°F 1995 | 61°F 1964 | 27% |
| Aug 14 | 92°F | 68°F | 102°F 1999 | 60°F 1964 | 27% |
| Aug 15 | 92°F | 68°F | 102°F 1995 | 63°F 1963 | 26% |
| Aug 16 | 92°F | 68°F | 103°F 1995 | 66°F 2013 | 26% |
| Aug 17 | 92°F | 68°F | 102°F 2000 | 65°F 2013 | 26% |
| Aug 18 | 92°F | 67°F | 104°F 2000 | 62°F 1948 | 26% |
| Aug 19 | 92°F | 67°F | 100°F 2000 | 64°F 1958 | 26% |
| Aug 20 | 92°F | 67°F | 102°F 1983 | 66°F 1948 | 25% |
| Aug 21 | 92°F | 67°F | 102°F 1983 | 62°F 1991 | 25% |
| Aug 22 | 92°F | 67°F | 102°F 2007 | 62°F 1961 | 25% |
| Aug 23 | 92°F | 67°F | 101°F 1968 | 62°F 1950 | 25% |
| Aug 24 | 92°F | 67°F | 100°F 1983 | 58°F 1953 | 25% |
| Aug 25 | 92°F | 67°F | 100°F 2023 | 58°F 1969 | 24% |
| Aug 26 | 92°F | 67°F | 102°F 2011 | 61°F 1969 | 24% |
| Aug 27 | 92°F | 66°F | 100°F 2023 | 60°F 1957 | 24% |
| Aug 28 | 92°F | 66°F | 101°F 1990 | 57°F 1952 | 24% |
| Aug 29 | 92°F | 66°F | 102°F 1990 | 59°F 1992 | 23% |
| Aug 30 | 91°F | 66°F | 100°F 1948 | 58°F 1986 | 23% |
| Aug 31 | 91°F | 66°F | 97°F 1998 | 59°F 1986 | 23% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:54 AM, sunset 8:36 PM
- August 31
- sunrise 7:13 AM, sunset 8:04 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00095394 (Lumpkin 2 Se), public domain. Records: NOAA GHCN-Daily, station USW00093842, 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.