Kennewick weather in August: Kennewick, Washington: normal highs, lows, rain and records for August
Kennewick in August has a normal high of 90°F and a normal low of 61°F, a daily mean of 76°F, falling from 93°F on the 1st to 86°F by the 31st. Measurable precipitation falls on 2 days in a normal August, 0.17 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 16°C, 4 mm of precipitation in August.
- NOAA stationKennewick
- Station IDUSC00454154
- Location46.21°N 119.10°W
- Elevation390 ft (119 m)
- From the center4 miles
- Population86,728
- Jan 42° 29°
- Feb 48° 31°
- Mar 58° 36°
- Apr 66° 42°
- May 75° 50°
- Jun 82° 56°
- Jul 91° 62°
- Aug 90° 61°
- Sep 81° 53°
- Oct 66° 43°
- Nov 51° 35°
- Dec 42° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kennewick in August?
The normal high is 90°F and the normal low 61°F, for a daily mean of 75.8°F. August is 1.0°F cooler than July and 9.0°F warmer than September. August is the 2nd warmest month of the year in Kennewick and the 12th wettest. Across the month the normal high falls 7°F, from 93°F on August 1 to 86°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 74°F and 78°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 7%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 93°F | 64°F | 6% | 2% |
| August 8 | 93°F | 63°F | 6% | 2% |
| August 15 | 91°F | 62°F | 6% | 2% |
| August 22 | 89°F | 60°F | 7% | 2% |
| August 31 | 86°F | 58°F | 7% | 3% |
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 | 93°F | 64°F | 6% | 2% | 14 h 50 min |
| August 2 | 93°F | 64°F | 6% | 2% | 14 h 50 min |
| August 3 | 93°F | 64°F | 6% | 2% | 14 h 50 min |
| August 4 | 93°F | 64°F | 6% | 2% | 14 h 40 min |
| August 5 | 93°F | 64°F | 6% | 2% | 14 h 40 min |
| August 6 | 93°F | 63°F | 6% | 2% | 14 h 40 min |
| August 7 | 93°F | 63°F | 6% | 2% | 14 h 40 min |
| August 8 | 93°F | 63°F | 6% | 2% | 14 h 30 min |
| August 9 | 92°F | 63°F | 6% | 2% | 14 h 30 min |
| August 10 | 92°F | 63°F | 6% | 2% | 14 h 30 min |
| August 11 | 92°F | 63°F | 6% | 2% | 14 h 30 min |
| August 12 | 92°F | 62°F | 6% | 2% | 14 h 20 min |
| August 13 | 91°F | 62°F | 6% | 2% | 14 h 20 min |
| August 14 | 91°F | 62°F | 6% | 2% | 14 h 20 min |
| August 15 | 91°F | 62°F | 6% | 2% | 14 h 10 min |
| August 16 | 91°F | 62°F | 6% | 2% | 14 h 10 min |
| August 17 | 90°F | 61°F | 6% | 2% | 14 h 10 min |
| August 18 | 90°F | 61°F | 6% | 2% | 14 h |
| August 19 | 90°F | 61°F | 6% | 2% | 14 h |
| August 20 | 90°F | 61°F | 6% | 2% | 14 h |
| August 21 | 89°F | 60°F | 7% | 2% | 14 h |
| August 22 | 89°F | 60°F | 7% | 2% | 13 h 50 min |
| August 23 | 89°F | 60°F | 7% | 2% | 13 h 50 min |
| August 24 | 88°F | 60°F | 7% | 2% | 13 h 50 min |
| August 25 | 88°F | 59°F | 7% | 2% | 13 h 40 min |
| August 26 | 88°F | 59°F | 7% | 2% | 13 h 40 min |
| August 27 | 87°F | 59°F | 7% | 2% | 13 h 40 min |
| August 28 | 87°F | 59°F | 7% | 2% | 13 h 30 min |
| August 29 | 87°F | 58°F | 7% | 3% | 13 h 30 min |
| August 30 | 86°F | 58°F | 7% | 3% | 13 h 30 min |
| August 31 | 86°F | 58°F | 7% | 3% | 13 h 30 min |
- Normal high
- 90°FAugust average
- Normal low
- 61°FAugust average
- Precipitation
- 0.17 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 17
- 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
- 29
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00454154; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kennewick in August?
On a given August day the chance of 0.01 inch or more is 6% on average, highest around August 31 (7%). In all, 0.17 in falls on 2 days of a normal August.
In a normal August in Kennewick, 17 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00454154.
What are the records for August in Kennewick?
The warmest August temperature on this station's record (since 1894) is 115°F, on August 10, 1898; the coldest is 37°F, on August 31, 1924. The wettest August brought 1.67 in (1977).
The August mean against the 1991-2020 normal of 75.8°F: 2021 76.7°F (+0.9), 2022 80.7°F (+4.9), 2023 77.5°F (+1.7), 2024 76.3°F (+0.5), 2025 78.9°F (+3.1), 2026 76.8°F (+1.0). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.7°F | +0.9°F | 0.00 in |
| 2022 | 80.7°F | +4.9°F | 0.00 in |
| 2023 | 77.5°F | +1.7°F | 0.22 in |
| 2024 | 76.3°F | +0.5°F | 0.13 in |
| 2025 | 78.9°F | +3.1°F | 0.07 in |
| 2026 | 76.8°F | +1.0°F | 0.08 in |
Source: records: ACIS, station USC00454154; recent months: ACIS, station USC00454154. Records and recent months use complete months only.
How does August in Kennewick 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; Kennewick's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.