Chehalis, WA Weather & Growing Conditions
Overnight
55°F
Mostly Clear
Mostly clear, with a low around 55. Northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Clear | 3 mph NW | 0% |
| Tuesday | 93°F | Sunny then Areas Of Smoke | 6 mph NNW | 0% |
| Tuesday Night | 60°F | Smoke | 5 mph NNW | 0% |
| Wednesday | 97°F | Areas Of Smoke | 5 mph NNW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 3 mph NW | 0% |
| Thursday | 95°F | Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 56°F | Mostly Clear | 1 to 6 mph W | 0% |
| Friday | 89°F | Sunny | 0 to 8 mph WNW | 0% |
| Friday Night | 55°F | Mostly Clear | 1 to 8 mph W | 0% |
| Saturday | 84°F | Sunny | 1 to 9 mph W | 0% |
| Saturday Night | 53°F | Partly Cloudy | 2 to 9 mph W | 0% |
| Sunday | 78°F | Mostly Sunny | 2 to 8 mph WNW | 0% |
| Sunday Night | 52°F | Partly Cloudy | 2 to 8 mph W | 0% |
| Monday | 79°F | Mostly Sunny | 1 to 7 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chehalis, WA
Last spring frost
Apr 22
First fall frost
Oct 27
Growing season
188 days
Hardiness zone
8a
Explore more for Chehalis, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Centralia, Wa (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.