Kennewick, WA Weather & Growing Conditions
This Afternoon
81°F
Sunny
Sunny. High near 81, with temperatures falling to around 78 in the afternoon. West wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 2 mph W | 1% |
| Tonight | 55°F | Mostly Clear | 3 mph S | 1% |
| Saturday | 81°F | Sunny | 2 mph S | 0% |
| Saturday Night | 57°F | Mostly Clear | 2 mph SE | 0% |
| Sunday | 82°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 59°F | Mostly Clear | 0 to 3 mph N | 0% |
| Monday | 84°F | Sunny | 0 to 3 mph SW | 0% |
| Monday Night | 58°F | Partly Cloudy | 3 mph SW | 0% |
| Tuesday | 81°F | Sunny | 3 mph SW | 0% |
| Tuesday Night | 55°F | Partly Cloudy | 5 mph SW | 0% |
| Wednesday | 76°F | Sunny | 5 mph SW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 3 mph W | 0% |
| Thursday | 78°F | Mostly Sunny | 1 to 5 mph NW | 2% |
| Thursday Night | 57°F | Partly Cloudy | 5 mph W | 5% |
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 Sep 19, 2026.