Portland, OR Weather & Growing Conditions
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 2 mph NNW | 0% |
| Saturday | 79°F | Patchy Fog then Partly Sunny | 3 mph NNW | 0% |
| Saturday Night | 55°F | Partly Cloudy | 3 mph NNW | 0% |
| Sunday | 82°F | Mostly Sunny | 5 mph NNW | 0% |
| Sunday Night | 56°F | Mostly Clear | 5 mph NNW | 0% |
| Monday | 77°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 6 mph NNW | 0% |
| Tuesday | 74°F | Mostly Sunny | 1 to 5 mph NNW | 1% |
| Tuesday Night | 53°F | Partly Cloudy | 1 to 5 mph NNW | 1% |
| Wednesday | 73°F | Mostly Sunny | 2 mph N | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 2 mph N | 1% |
| Thursday | 76°F | Mostly Sunny | 2 mph N | 7% |
| Thursday Night | 56°F | Slight Chance Light Rain | 2 mph NW | 21% |
| Friday | 70°F | Slight Chance Light Rain then Partly Sunny | 2 to 6 mph W | 17% |
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
Hardiness zone
9a
Explore more for Portland, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Portland Kgw-Tv, Or (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.