Bethany, OR Weather & Growing Conditions
Tonight
41°F
Mostly Clear then Areas Of Fog
Areas of fog after 3am. Mostly clear, with a low around 41. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Mostly Clear then Areas Of Fog | 0 mph | 5% |
| Wednesday | 55°F | Areas Of Fog then Light Rain Likely | 2 mph S | 59% |
| Wednesday Night | 47°F | Light Rain | 5 mph S | 94% |
| Thursday | 57°F | Partly Sunny | 3 mph SSW | 14% |
| Thursday Night | 47°F | Light Rain Likely | 1 mph S | 58% |
| Friday | 56°F | Light Rain Likely | 3 mph SSE | 58% |
| Friday Night | 48°F | Slight Chance Light Rain then Mostly Cloudy | 1 mph SSE | 20% |
| Saturday | 61°F | Partly Sunny then Slight Chance Light Rain | 2 mph SSE | 15% |
| Saturday Night | 51°F | Light Rain Likely | 2 to 9 mph S | 66% |
| Sunday | 58°F | Light Rain Likely | 1 to 8 mph SSW | 66% |
| Sunday Night | 46°F | Mostly Cloudy then Slight Chance Light Rain | 1 mph N | 20% |
| Monday | 57°F | Chance Light Rain | 2 mph SE | 47% |
| Monday Night | 49°F | Chance Light Rain | 3 mph SSE | 52% |
| Tuesday | 59°F | Light Rain Likely | 3 mph S | 55% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bethany, OR
Last spring frost
Feb 11
First fall frost
Dec 5
Growing season
303 days
Hardiness zone
8b
Explore more for Bethany, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Nature Park-Beaverton, Or (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.