Portland, OR Weather & Growing Conditions
Tonight
42°F
Mostly Clear then Areas Of Fog
Areas of fog after midnight. Mostly clear, with a low around 42. East wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Mostly Clear then Areas Of Fog | 1 mph E | 4% |
| Wednesday | 58°F | Patchy Fog then Chance Light Rain | 2 mph S | 51% |
| Wednesday Night | 49°F | Light Rain | 1 to 5 mph S | 94% |
| Thursday | 59°F | Slight Chance Light Rain then Partly Sunny | 0 to 3 mph SSW | 22% |
| Thursday Night | 48°F | Patchy Fog then Chance Light Rain | 1 mph SE | 52% |
| Friday | 59°F | Chance Light Rain | 2 mph SSE | 52% |
| Friday Night | 49°F | Slight Chance Light Rain | 1 mph SSE | 20% |
| Saturday | 63°F | Patchy Fog then Slight Chance Light Rain | 1 mph SSE | 15% |
| Saturday Night | 51°F | Light Rain Likely | 1 to 8 mph S | 69% |
| Sunday | 60°F | Light Rain Likely | 1 to 7 mph SSW | 69% |
| Sunday Night | 48°F | Patchy Fog | 1 mph NE | 20% |
| Monday | 59°F | Chance Light Rain | 2 mph SE | 44% |
| Monday Night | 49°F | Chance Light Rain | 3 mph SSE | 50% |
| Tuesday | 61°F | Chance Light Rain | 3 mph SSE | 54% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portland, OR
Last spring frost
Feb 25
First fall frost
Dec 1
Growing season
280 days
Explore more for Portland, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Portland Kgw-Tv, Or (0.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.