Kennewick, WA Weather & Growing Conditions
Overnight
58°F
Smoke
Smoke. Clear. Low around 58, with temperatures rising to around 61 overnight. Northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Smoke | 2 mph NW | 0% |
| Tuesday | 90°F | Smoke | 2 to 7 mph NW | 0% |
| Tuesday Night | 62°F | Areas Of Smoke | 0 to 7 mph NW | 0% |
| Wednesday | 95°F | Areas Of Smoke | 0 to 5 mph N | 0% |
| Wednesday Night | 65°F | Areas Of Smoke then Clear | 3 mph W | 0% |
| Thursday | 100°F | Sunny | 5 mph SW | 0% |
| Thursday Night | 68°F | Clear | 2 to 8 mph SW | 0% |
| Friday | 98°F | Sunny | 9 mph SW | 0% |
| Friday Night | 67°F | Clear | 5 to 8 mph SW | 0% |
| Saturday | 95°F | Sunny | 7 mph SW | 0% |
| Saturday Night | 65°F | Mostly Clear | 8 mph SW | 0% |
| Sunday | 91°F | Sunny | 9 mph SW | 0% |
| Sunday Night | 62°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Monday | 89°F | Sunny | 8 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kennewick, WA
Last spring frost
Mar 28
First fall frost
Oct 30
Growing season
216 days
Hardiness zone
7b
Explore more for Kennewick, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Kennewick, Wa (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.