Kennewick, WA Weather & Growing Conditions
Today
53°F
Patchy Fog then Mostly Sunny
Patchy fog before 10am. Mostly sunny. High near 53, with temperatures falling to around 50 in the afternoon. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Patchy Fog then Mostly Sunny | 3 mph E | 1% |
| Tonight | 42°F | Chance Rain Showers | 3 mph S | 25% |
| Thursday | 59°F | Sunny | 2 to 6 mph SW | 5% |
| Thursday Night | 38°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Friday | 55°F | Mostly Cloudy | 0 to 3 mph S | 13% |
| Friday Night | 40°F | Mostly Cloudy | 0 to 3 mph S | 13% |
| Saturday | 58°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 42°F | Mostly Cloudy | 1 to 6 mph W | 3% |
| Sunday | 61°F | Mostly Cloudy | 5 to 8 mph SW | 3% |
| Sunday Night | 41°F | Mostly Cloudy | 0 to 5 mph SW | 3% |
| Monday | 56°F | Mostly Cloudy | 2 mph NW | 7% |
| Monday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph SW | 19% |
| Tuesday | 60°F | Slight Chance Rain Showers | 0 to 3 mph S | 20% |
| Tuesday Night | 44°F | Slight Chance Rain Showers | 3 mph SW | 18% |
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 (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.