Portland, OR Weather & Growing Conditions
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 81°F | Mostly Sunny | 3 mph N | 0% |
| Sunday Night | 56°F | Partly Cloudy | 3 mph NNW | 0% |
| Monday | 77°F | Partly Sunny | 1 to 5 mph NNW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 5 mph NNW | 0% |
| Tuesday | 74°F | Partly Sunny | 3 mph NNW | 0% |
| Tuesday Night | 53°F | Partly Cloudy | 0 to 3 mph NNW | 0% |
| Wednesday | 72°F | Partly Sunny | 2 mph NW | 0% |
| Wednesday Night | 53°F | Mostly Cloudy | 2 mph NNW | 3% |
| Thursday | 70°F | Partly Sunny | 5 mph N | 6% |
| Thursday Night | 53°F | Slight Chance Light Rain | 5 mph NNW | 15% |
| Friday | 68°F | Partly Sunny | 2 to 6 mph NNW | 14% |
| Friday Night | 51°F | Partly Cloudy | 2 to 6 mph NW | 10% |
| Saturday | 70°F | Mostly Sunny | 5 mph WNW | 9% |
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 (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.