Portland, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portland, a city in Multnomah County, Oregon.
Overnight
59°F
Areas Of Smoke
Areas of smoke. Clear. Low around 59, with temperatures rising to around 61 overnight. North northwest wind around 6 mph.
7-day forecast for Portland
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Areas Of Smoke | 6 mph NNW | 0% |
| Tuesday | 96°F | Areas Of Smoke | 8 mph NNE | 0% |
| Tuesday Night | 63°F | Smoke | 3 to 8 mph N | 0% |
| Wednesday | 98°F | Areas Of Smoke | 6 mph NNW | 0% |
| Wednesday Night | 66°F | Clear | 1 to 6 mph NNW | 0% |
| Thursday | 98°F | Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 64°F | Clear | 1 to 6 mph NNW | 0% |
| Friday | 92°F | Sunny | 1 to 8 mph NNW | 0% |
| Friday Night | 61°F | Mostly Clear | 3 to 8 mph NNW | 0% |
| Saturday | 87°F | Sunny | 3 to 10 mph NNW | 0% |
| Saturday Night | 58°F | Mostly Clear | 3 to 10 mph NNW | 0% |
| Sunday | 81°F | Sunny | 3 to 9 mph NNW | 0% |
| Sunday Night | 57°F | Mostly Clear | 2 to 9 mph NNW | 0% |
| Monday | 81°F | Sunny | 2 to 8 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Portland (45.537, -122.650). Updated through the day.
Growing snapshot for Portland
Last spring frost
Feb 25
First fall frost
Dec 1
Growing season
280 days
Hardiness zone
8b
More local growing data for Portland: nearby ZIP 97212 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Portland Kgw-Tv, Or (2.9 mi from Portland). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.