Vernonia, OR Weather & Growing Conditions
Today
76°F
Mostly Sunny
Mostly sunny. High near 76, with temperatures falling to around 74 in the afternoon. North northeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 1 mph NNE | 0% |
| Tonight | 47°F | Patchy Fog | 1 mph NNW | 0% |
| Sunday | 77°F | Patchy Fog then Mostly Sunny | 2 mph N | 0% |
| Sunday Night | 48°F | Partly Cloudy | 2 mph NW | 0% |
| Monday | 72°F | Mostly Sunny | 5 mph NW | 0% |
| Monday Night | 47°F | Partly Cloudy | 5 mph NW | 0% |
| Tuesday | 68°F | Partly Sunny | 5 mph NW | 0% |
| Tuesday Night | 45°F | Areas Of Fog | 0 to 5 mph NNW | 2% |
| Wednesday | 66°F | Areas Of Fog then Partly Sunny | 2 mph NW | 2% |
| Wednesday Night | 45°F | Mostly Cloudy then Patchy Fog | 2 mph NNW | 3% |
| Thursday | 64°F | Patchy Fog then Partly Sunny | 3 mph NNW | 12% |
| Thursday Night | 45°F | Mostly Cloudy | 3 mph NNW | 14% |
| Friday | 62°F | Slight Chance Light Rain | 5 mph NNW | 18% |
| Friday Night | 43°F | Partly Cloudy then Patchy Fog | 3 mph NW | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vernonia, OR
Last spring frost
May 8
First fall frost
Oct 1
Growing season
144 days
Hardiness zone
8b
Explore more for Vernonia, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Vernonia #2, Or (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.