Richland weather in August: Richland, Washington: normal highs, lows, rain and records for August
Richland in August has a normal high of 88°F and a normal low of 59°F, a daily mean of 74°F, falling from 91°F on the 1st to 84°F by the 31st. Measurable precipitation falls on 2 days in a normal August, 0.13 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 15°C, 3 mm of precipitation in August.
- NOAA stationRichland
- Station IDUSC00457015
- Location46.31°N 119.26°W
- Elevation373 ft (114 m)
- Population64,372
- Jan 41° 29°
- Feb 48° 30°
- Mar 57° 35°
- Apr 65° 41°
- May 74° 48°
- Jun 80° 54°
- Jul 89° 60°
- Aug 88° 59°
- Sep 79° 51°
- Oct 64° 42°
- Nov 49° 34°
- Dec 40° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Richland in August?
The normal high is 88°F and the normal low 59°F, for a daily mean of 73.6°F. August is 1.1°F cooler than July and 8.4°F warmer than September. August is the 2nd warmest month of the year in Richland and the 12th wettest. Across the month the normal high falls 7°F, from 91°F on August 1 to 84°F on August 31. From one year to the next August's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 72°F and 75°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 8%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 91°F | 61°F | 6% | 1% |
| August 8 | 90°F | 61°F | 6% | 1% |
| August 15 | 89°F | 60°F | 7% | 1% |
| August 22 | 87°F | 58°F | 7% | 2% |
| August 31 | 84°F | 56°F | 8% | 2% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 91°F | 61°F | 6% | 1% | 14 h 50 min |
| August 2 | 91°F | 61°F | 6% | 1% | 14 h 50 min |
| August 3 | 91°F | 61°F | 6% | 1% | 14 h 50 min |
| August 4 | 91°F | 61°F | 6% | 1% | 14 h 40 min |
| August 5 | 91°F | 61°F | 6% | 1% | 14 h 40 min |
| August 6 | 91°F | 61°F | 6% | 1% | 14 h 40 min |
| August 7 | 90°F | 61°F | 6% | 1% | 14 h 40 min |
| August 8 | 90°F | 61°F | 6% | 1% | 14 h 30 min |
| August 9 | 90°F | 61°F | 6% | 1% | 14 h 30 min |
| August 10 | 90°F | 60°F | 6% | 1% | 14 h 30 min |
| August 11 | 90°F | 60°F | 6% | 1% | 14 h 30 min |
| August 12 | 89°F | 60°F | 6% | 1% | 14 h 20 min |
| August 13 | 89°F | 60°F | 6% | 1% | 14 h 20 min |
| August 14 | 89°F | 60°F | 6% | 1% | 14 h 20 min |
| August 15 | 89°F | 60°F | 7% | 1% | 14 h 10 min |
| August 16 | 88°F | 59°F | 7% | 2% | 14 h 10 min |
| August 17 | 88°F | 59°F | 7% | 2% | 14 h 10 min |
| August 18 | 88°F | 59°F | 7% | 2% | 14 h 10 min |
| August 19 | 88°F | 59°F | 7% | 2% | 14 h |
| August 20 | 87°F | 58°F | 7% | 2% | 14 h |
| August 21 | 87°F | 58°F | 7% | 2% | 14 h |
| August 22 | 87°F | 58°F | 7% | 2% | 13 h 50 min |
| August 23 | 86°F | 58°F | 8% | 2% | 13 h 50 min |
| August 24 | 86°F | 57°F | 8% | 2% | 13 h 50 min |
| August 25 | 86°F | 57°F | 8% | 2% | 13 h 40 min |
| August 26 | 86°F | 57°F | 8% | 2% | 13 h 40 min |
| August 27 | 85°F | 57°F | 8% | 2% | 13 h 40 min |
| August 28 | 85°F | 56°F | 8% | 2% | 13 h 40 min |
| August 29 | 85°F | 56°F | 8% | 2% | 13 h 30 min |
| August 30 | 85°F | 56°F | 8% | 2% | 13 h 30 min |
| August 31 | 84°F | 56°F | 8% | 2% | 13 h 30 min |
- Normal high
- 88°FAugust average
- Normal low
- 59°FAugust average
- Precipitation
- 0.13 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 14 h 50 min to 13 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00457015; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Richland in August?
On a given August day the chance of 0.01 inch or more is 7% on average, highest around August 31 (8%). In all, 0.13 in falls on 2 days of a normal August.
In a normal August in Richland, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00457015.
What are the records for August in Richland?
The warmest August temperature on this station's record (since 1944) is 113°F, on August 5, 1961; the coldest is 39°F, on August 19, 1973. The wettest August brought 1.82 in (1977).
The August mean against the 1991-2020 normal of 73.6°F: 2021 74.6°F (+1.0), 2022 78.5°F (+4.9), 2023 75.5°F (+1.9), 2024 73.8°F (+0.2), 2025 76.3°F (+2.7), 2026 74.9°F (+1.3). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.6°F | +1.0°F | 0.00 in |
| 2022 | 78.5°F | +4.9°F | 0.00 in |
| 2023 | 75.5°F | +1.9°F | 0.44 in |
| 2024 | 73.8°F | +0.2°F | 0.06 in |
| 2025 | 76.3°F | +2.7°F | 0.00 in |
| 2026 | 74.9°F | +1.3°F | 0.12 in |
Source: records: ACIS, station USC00457015; recent months: ACIS, station USC00457015. Records and recent months use complete months only.
How does August in Richland compare across Washington?
Across the 96 places PlainClimate covers in Washington, August normal highs run from 67°F in Long Beach to 91°F in Pasco; Richland's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.