Cathlamet, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cathlamet, a town in Wahkiakum County, Washington.
Today
88°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 88. North northeast wind 2 to 6 mph.
7-day forecast for Cathlamet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Areas Of Smoke | 2 to 6 mph NNE | 0% |
| Tonight | 60°F | Areas Of Smoke | 2 to 6 mph N | 0% |
| Wednesday | 91°F | Areas Of Smoke | 2 to 9 mph N | 0% |
| Wednesday Night | 59°F | Mostly Clear | 3 to 9 mph WNW | 0% |
| Thursday | 84°F | Sunny | 2 to 10 mph W | 0% |
| Thursday Night | 57°F | Partly Cloudy | 6 to 10 mph WNW | 0% |
| Friday | 78°F | Sunny | 5 to 13 mph WNW | 0% |
| Friday Night | 56°F | Mostly Clear | 8 to 13 mph WNW | 0% |
| Saturday | 75°F | Mostly Sunny | 7 to 15 mph WNW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 9 to 15 mph WNW | 0% |
| Sunday | 71°F | Mostly Sunny | 8 to 14 mph WNW | 0% |
| Sunday Night | 55°F | Partly Cloudy | 7 to 14 mph WNW | 0% |
| Monday | 71°F | Mostly Sunny | 6 to 14 mph WNW | 0% |
| Monday Night | 56°F | Partly Cloudy | 6 to 14 mph WNW | 1% |
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 Aug 4, 2026.