Kelso, WA Weather & Growing Conditions
Today
57°F
Mostly Cloudy then Light Rain
Rain after 3pm. Mostly cloudy. High near 57, with temperatures falling to around 53 in the afternoon. South southeast wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Mostly Cloudy then Light Rain | 7 mph SSE | 81% |
| Tonight | 47°F | Light Rain | 1 to 6 mph SSE | 95% |
| Thursday | 56°F | Partly Sunny | 1 to 6 mph SSE | 8% |
| Thursday Night | 45°F | Areas Of Fog then Chance Light Rain | 0 to 7 mph SSE | 33% |
| Friday | 53°F | Light Rain | 7 to 14 mph SE | 75% |
| Friday Night | 49°F | Light Rain Likely | 3 to 8 mph SE | 73% |
| Saturday | 63°F | Partly Sunny then Chance Light Rain | 3 to 9 mph SSE | 27% |
| Saturday Night | 50°F | Light Rain | 7 to 15 mph SSE | 86% |
| Sunday | 57°F | Light Rain Likely | 1 to 8 mph WSW | 61% |
| Sunday Night | 44°F | Mostly Cloudy | 1 mph N | 7% |
| Monday | 56°F | Partly Sunny then Slight Chance Light Rain | 1 to 7 mph ESE | 17% |
| Monday Night | 47°F | Chance Light Rain | 5 to 14 mph SSE | 51% |
| Tuesday | 57°F | Light Rain Likely | 7 to 15 mph SSE | 57% |
| Tuesday Night | 49°F | Light Rain Likely | 9 mph SSE | 55% |
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.