Kelso, WA Weather & Growing Conditions
Tonight
41°F
Mostly Clear then Patchy Fog
Patchy fog between 2am and 3am. Mostly clear, with a low around 41. Southeast wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Mostly Clear then Patchy Fog | 0 to 3 mph SE | 2% |
| Wednesday | 57°F | Mostly Cloudy then Light Rain Likely | 3 to 8 mph SSE | 64% |
| Wednesday Night | 47°F | Light Rain | 2 to 6 mph SSE | 95% |
| Thursday | 57°F | Slight Chance Light Rain then Partly Sunny | 2 to 6 mph SSE | 15% |
| Thursday Night | 47°F | Patchy Fog then Chance Light Rain | 0 to 6 mph SSE | 47% |
| Friday | 57°F | Light Rain Likely | 6 to 13 mph SE | 59% |
| Friday Night | 48°F | Chance Light Rain | 2 to 6 mph SE | 49% |
| Saturday | 63°F | Partly Sunny then Chance Light Rain | 3 to 8 mph SSE | 29% |
| Saturday Night | 50°F | Light Rain Likely | 7 to 15 mph SSE | 69% |
| Sunday | 58°F | Light Rain Likely | 2 to 12 mph SSW | 67% |
| Sunday Night | 45°F | Slight Chance Light Rain then Patchy Fog | 0 to 3 mph E | 22% |
| Monday | 57°F | Chance Light Rain | 3 to 8 mph SE | 47% |
| Monday Night | 48°F | Light Rain Likely | 6 to 14 mph SSE | 64% |
| Tuesday | 59°F | Light Rain Likely | 6 to 14 mph SSE | 64% |
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 (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.