Portland, OR Weather & Growing Conditions
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. Northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 82°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 2 to 6 mph NNW | 0% |
| Monday | 78°F | Partly Sunny | 2 to 7 mph NNW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 7 mph NW | 0% |
| Tuesday | 74°F | Partly Sunny | 1 to 6 mph NNW | 0% |
| Tuesday Night | 53°F | Partly Cloudy | 1 to 6 mph NNW | 0% |
| Wednesday | 72°F | Partly Sunny | 1 to 5 mph NW | 0% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 mph NNW | 3% |
| Thursday | 70°F | Partly Sunny | 2 to 7 mph NNW | 8% |
| Thursday Night | 53°F | Mostly Cloudy | 3 to 7 mph NNW | 14% |
| Friday | 68°F | Partly Sunny | 3 to 8 mph NW | 14% |
| Friday Night | 51°F | Partly Cloudy | 3 to 8 mph NW | 10% |
| Saturday | 70°F | Mostly Sunny | 6 mph WNW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portland, OR
Last spring frost
Mar 13
First fall frost
Nov 19
Growing season
247 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 Intl Ap, Or (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.