Cathlamet, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cathlamet, a town in Wahkiakum County, Washington.
Today
60°F
Slight Chance Rain Showers then Partly Sunny
A slight chance of rain showers before noon. Partly sunny. High near 60, with temperatures falling to around 56 in the afternoon. Southeast wind 0 to 3 mph. Chance of precipitation is 20%.
7-day forecast for Cathlamet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Slight Chance Rain Showers then Partly Sunny | 0 to 3 mph SE | 15% |
| Tonight | 43°F | Partly Cloudy | 0 to 6 mph E | 4% |
| Wednesday | 57°F | Partly Sunny then Light Rain | 7 mph SE | 82% |
| Wednesday Night | 48°F | Light Rain | 3 to 7 mph S | 99% |
| Thursday | 57°F | Slight Chance Light Rain then Partly Sunny | 5 mph S | 20% |
| Thursday Night | 49°F | Light Rain | 2 to 9 mph SSE | 77% |
| Friday | 56°F | Light Rain | 3 to 10 mph SE | 77% |
| Friday Night | 50°F | Chance Light Rain | 3 to 8 mph SE | 40% |
| Saturday | 61°F | Mostly Cloudy then Chance Light Rain | 9 mph SE | 37% |
| Saturday Night | 51°F | Light Rain | 7 to 17 mph SSW | 76% |
| Sunday | 57°F | Light Rain Likely | 2 to 14 mph SW | 68% |
| Sunday Night | 47°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 6 mph S | 24% |
| Monday | 56°F | Chance Light Rain | 7 mph ESE | 48% |
| Monday Night | 49°F | Light Rain Likely | 5 to 14 mph SE | 67% |
Forecast source: National Weather Service (api.weather.gov) for Cathlamet (46.206, -123.384). Updated through the day.
Growing snapshot for Cathlamet
Last spring frost
Apr 24
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
8b
More local growing data for Cathlamet: nearby ZIP 98612 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Clatskanie, Or (10.6 mi from Cathlamet). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.