Rosburg, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosburg, a community in Wahkiakum County, Washington.
Tonight
41°F
Mostly Clear
Mostly clear, with a low around 41. East southeast wind around 3 mph.
7-day forecast for Rosburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Mostly Clear | 3 mph ESE | 2% |
| Wednesday | 58°F | Mostly Cloudy then Light Rain | 5 mph SE | 98% |
| Wednesday Night | 46°F | Light Rain Likely | 2 to 8 mph SSW | 74% |
| Thursday | 58°F | Slight Chance Light Rain then Partly Sunny | 3 mph S | 15% |
| Thursday Night | 46°F | Light Rain Likely | 1 to 6 mph SE | 71% |
| Friday | 58°F | Light Rain | 3 to 8 mph SSE | 82% |
| Friday Night | 49°F | Light Rain Likely | 3 to 8 mph SE | 73% |
| Saturday | 63°F | Light Rain Likely | 7 mph SE | 69% |
| Saturday Night | 50°F | Light Rain | 7 to 18 mph S | 86% |
| Sunday | 58°F | Light Rain Likely | 1 to 10 mph SW | 63% |
| Sunday Night | 44°F | Slight Chance Light Rain | 1 to 5 mph SE | 15% |
| Monday | 58°F | Chance Light Rain | 6 mph ESE | 42% |
| Monday Night | 48°F | Light Rain Likely | 5 to 14 mph SSE | 58% |
| Tuesday | 59°F | Light Rain Likely | 6 to 12 mph SSE | 58% |
Forecast source: National Weather Service (api.weather.gov) for Rosburg (46.308, -123.643). Updated through the day.
Growing snapshot for Rosburg
Last spring frost
Apr 24
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
8b
More local growing data for Rosburg: nearby ZIP 98643 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Naselle 2 Ene, Wa (7.3 mi from Rosburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.