Kelso, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kelso, a city in Cowlitz County, Washington.
Today
92°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 92. North wind around 8 mph.
7-day forecast for Kelso
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Areas Of Smoke | 8 mph N | 0% |
| Tonight | 60°F | Smoke | 5 to 8 mph NNW | 0% |
| Wednesday | 97°F | Areas Of Smoke | 6 mph NNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 6 mph NNW | 0% |
| Thursday | 95°F | Sunny | 0 to 8 mph NW | 0% |
| Thursday Night | 58°F | Mostly Clear | 1 to 8 mph NW | 0% |
| Friday | 89°F | Sunny | 1 to 10 mph WNW | 0% |
| Friday Night | 57°F | Mostly Clear | 2 to 10 mph NW | 0% |
| Saturday | 84°F | Sunny | 2 to 12 mph NW | 0% |
| Saturday Night | 55°F | Partly Cloudy | 2 to 12 mph NW | 0% |
| Sunday | 78°F | Mostly Sunny | 2 to 10 mph NW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 1 to 10 mph NW | 0% |
| Monday | 78°F | Mostly Sunny | 1 to 10 mph NW | 0% |
| Monday Night | 54°F | Partly Cloudy | 1 to 10 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Kelso (46.117, -122.886). Updated through the day.
Growing snapshot for Kelso
Last spring frost
Apr 8
First fall frost
Nov 5
Growing season
210 days
Hardiness zone
8b
More local growing data for Kelso: nearby ZIP 98609 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Longview, Wa (6 mi from Kelso). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.