Vernonia, OR Weather & Growing Conditions
Today
53°F
Patchy Frost then Light Rain
Patchy frost and patchy fog before 9am, then rain and patchy fog. Mostly cloudy. High near 53, with temperatures falling to around 49 in the afternoon. South southeast wind around 3 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Patchy Frost then Light Rain | 3 mph SSE | 88% |
| Tonight | 40°F | Light Rain then Patchy Fog | 2 mph SSW | 86% |
| Thursday | 54°F | Patchy Fog | 2 mph S | 6% |
| Thursday Night | 39°F | Areas Of Fog then Chance Light Rain | 2 mph SE | 47% |
| Friday | 54°F | Light Rain Likely | 0 to 5 mph SSE | 58% |
| Friday Night | 43°F | Chance Light Rain | 2 mph SSE | 48% |
| Saturday | 59°F | Partly Sunny then Chance Light Rain | 3 mph SSE | 33% |
| Saturday Night | 44°F | Light Rain | 2 to 8 mph S | 79% |
| Sunday | 53°F | Chance Light Rain | 0 to 6 mph W | 45% |
| Sunday Night | 38°F | Mostly Cloudy then Slight Chance Light Rain | 0 mph | 15% |
| Monday | 53°F | Chance Light Rain | 0 to 3 mph SSE | 38% |
| Monday Night | 41°F | Chance Light Rain | 1 to 6 mph SSE | 46% |
| Tuesday | 54°F | Chance Light Rain | 2 to 7 mph SSE | 46% |
| Tuesday Night | 43°F | Chance Light Rain | 5 mph SSE | 48% |
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 Nov 4, 2026.