Vernonia, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vernonia, a city in Columbia County, Oregon.
This Afternoon
61°F
Partly Sunny
Partly sunny. High near 61, with temperatures falling to around 55 in the afternoon. Wind around 0 mph.
7-day forecast for Vernonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Partly Sunny | 0 mph | 4% |
| Tonight | 34°F | Areas Of Fog | 0 mph | 4% |
| Wednesday | 55°F | Areas Of Frost then Light Rain Likely | 0 to 3 mph SSE | 67% |
| Wednesday Night | 41°F | Light Rain then Areas Of Fog | 2 mph SSE | 99% |
| Thursday | 57°F | Areas Of Fog then Partly Sunny | 2 mph SSE | 9% |
| Thursday Night | 40°F | Areas Of Fog | 1 mph SSE | 71% |
| Friday | 56°F | Light Rain Likely | 1 to 5 mph SSE | 71% |
| Friday Night | 41°F | Chance Light Rain then Areas Of Fog | 1 mph ENE | 28% |
| Saturday | 61°F | Areas Of Fog then Chance Light Rain | 0 to 5 mph SE | 29% |
| Saturday Night | 44°F | Light Rain Likely | 2 to 8 mph S | 69% |
| Sunday | 57°F | Light Rain Likely | 2 mph WSW | 58% |
| Sunday Night | 39°F | Areas Of Fog | 0 mph | 21% |
| Monday | 56°F | Areas Of Fog | 0 to 3 mph SSE | 45% |
| Monday Night | 41°F | Light Rain Likely | 3 mph SSE | 64% |
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 Nov 4, 2026.