Kelso, WA Weather & Growing Conditions
Overnight
39°F
Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 39. Southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Patchy Fog | 1 mph SE | 2% |
| Wednesday | 56°F | Patchy Fog then Light Rain Likely | 1 to 6 mph SSE | 63% |
| Wednesday Night | 45°F | Light Rain | 1 to 7 mph S | 97% |
| Thursday | 55°F | Chance Light Rain then Patchy Fog | 1 to 5 mph SSE | 28% |
| Thursday Night | 43°F | Areas Of Fog then Chance Light Rain | 0 to 3 mph SSE | 47% |
| Friday | 55°F | Light Rain Likely | 3 to 12 mph SSE | 62% |
| Friday Night | 46°F | Chance Light Rain | 5 mph SE | 54% |
| Saturday | 62°F | Partly Sunny then Chance Light Rain | 2 to 6 mph SSE | 27% |
| Saturday Night | 47°F | Light Rain | 6 to 14 mph SSE | 80% |
| Sunday | 54°F | Light Rain Likely | 0 to 8 mph SSW | 56% |
| Sunday Night | 42°F | Slight Chance Light Rain | 1 mph NE | 15% |
| Monday | 55°F | Chance Light Rain | 1 to 6 mph ESE | 39% |
| Monday Night | 45°F | Chance Light Rain | 3 to 10 mph SSE | 47% |
| Tuesday | 56°F | Chance Light Rain | 5 to 13 mph SSE | 48% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kelso, WA
Last spring frost
Apr 8
First fall frost
Nov 5
Growing season
210 days
Hardiness zone
8b
Explore more for Kelso, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Longview, Wa (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.