Vernonia, OR Weather & Growing Conditions
Overnight
38°F
Patchy Fog
Patchy fog before 4am. Mostly clear, with a low around 38. Southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 38°F | Patchy Fog | 2 mph SE | 1% |
| Wednesday | 54°F | Mostly Cloudy then Light Rain | 5 mph SSE | 81% |
| Wednesday Night | 42°F | Light Rain then Patchy Fog | 3 mph S | 86% |
| Thursday | 56°F | Patchy Fog | 0 to 3 mph S | 3% |
| Thursday Night | 41°F | Areas Of Fog then Chance Light Rain | 0 to 3 mph SSE | 47% |
| Friday | 55°F | Chance Light Rain | 1 to 6 mph SSE | 54% |
| Friday Night | 44°F | Chance Light Rain | 0 to 3 mph SSE | 43% |
| Saturday | 61°F | Partly Sunny then Chance Light Rain | 5 mph SSE | 30% |
| Saturday Night | 46°F | Light Rain | 3 to 12 mph S | 78% |
| Sunday | 56°F | Chance Light Rain | 0 to 9 mph SW | 42% |
| Sunday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 1 mph N | 15% |
| Monday | 54°F | Chance Light Rain | 3 mph SE | 38% |
| Monday Night | 43°F | Chance Light Rain | 1 to 9 mph SSE | 44% |
| Tuesday | 56°F | Chance Light Rain | 2 to 9 mph SSE | 44% |
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 (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.