Vernonia, OR Weather & Growing Conditions
Overnight
35°F
Patchy Frost
Patchy frost and patchy fog before 4am, then areas of fog and patchy frost. Partly cloudy, with a low around 35. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Patchy Frost | 0 mph | 1% |
| Wednesday | 55°F | Areas Of Fog then Light Rain | 0 to 3 mph SSE | 85% |
| Wednesday Night | 40°F | Light Rain then Areas Of Fog | 2 mph SSW | 88% |
| Thursday | 57°F | Areas Of Fog then Partly Sunny | 2 mph SE | 6% |
| Thursday Night | 39°F | Areas Of Fog then Chance Light Rain | 1 mph SE | 51% |
| Friday | 56°F | Light Rain Likely | 1 to 5 mph SSE | 58% |
| Friday Night | 43°F | Chance Light Rain | 2 mph S | 46% |
| Saturday | 62°F | Partly Sunny then Chance Light Rain | 0 to 5 mph SSE | 32% |
| Saturday Night | 45°F | Light Rain | 2 to 9 mph S | 79% |
| Sunday | 56°F | Chance Light Rain | 2 mph SW | 41% |
| Sunday Night | 38°F | Mostly Cloudy then Slight Chance Light Rain | 0 mph | 15% |
| Monday | 55°F | Chance Light Rain | 0 to 3 mph SE | 36% |
| Monday Night | 41°F | Chance Light Rain | 1 to 5 mph SSE | 45% |
| Tuesday | 57°F | Chance Light Rain | 5 mph SSE | 45% |
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
8a
Explore more for Vernonia, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Vernonia #2, Or (2.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.