Vernonia, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vernonia, a city in Columbia County, Oregon.
Overnight
53°F
Areas Of Smoke
Areas of smoke. Clear, with a low around 53. North wind around 1 mph.
7-day forecast for Vernonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Areas Of Smoke | 1 mph N | 0% |
| Tuesday | 92°F | Areas Of Smoke | 3 mph NNE | 0% |
| Tuesday Night | 58°F | Areas Of Smoke | 0 to 3 mph NNW | 0% |
| Wednesday | 97°F | Areas Of Smoke | 0 to 3 mph N | 0% |
| Wednesday Night | 57°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Thursday | 94°F | Sunny | 0 to 5 mph NNW | 0% |
| Thursday Night | 54°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Friday | 88°F | Sunny | 0 to 6 mph NNW | 0% |
| Friday Night | 53°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Saturday | 81°F | Sunny | 1 to 7 mph NW | 0% |
| Saturday Night | 50°F | Partly Cloudy | 2 to 7 mph NW | 0% |
| Sunday | 76°F | Mostly Sunny | 2 to 6 mph NW | 0% |
| Sunday Night | 49°F | Partly Cloudy | 1 to 6 mph NW | 0% |
| Monday | 76°F | Mostly Sunny | 1 to 6 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Vernonia (45.864, -123.184). Updated through the day.
Growing snapshot for Vernonia
Last spring frost
May 8
First fall frost
Oct 1
Growing season
144 days
Hardiness zone
8a
More local growing data for Vernonia: nearby ZIP 97064 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Vernonia #2, Or (2.2 mi from Vernonia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.