Portland, OR Weather & Growing Conditions
Today
58°F
Mostly Cloudy then Light Rain Likely
Rain likely after 4pm. Mostly cloudy. High near 58, with temperatures falling to around 55 in the afternoon. South southeast wind around 2 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Mostly Cloudy then Light Rain Likely | 2 mph SSE | 67% |
| Tonight | 48°F | Light Rain | 3 mph S | 85% |
| Thursday | 57°F | Patchy Fog then Partly Sunny | 2 mph SSE | 3% |
| Thursday Night | 45°F | Patchy Fog | 1 mph E | 9% |
| Friday | 55°F | Chance Light Rain | 2 mph SE | 51% |
| Friday Night | 48°F | Chance Light Rain | 2 mph SE | 51% |
| Saturday | 63°F | Patchy Fog then Slight Chance Light Rain | 2 mph SE | 15% |
| Saturday Night | 51°F | Light Rain | 2 to 9 mph SSE | 80% |
| Sunday | 58°F | Chance Light Rain | 0 to 7 mph WSW | 52% |
| Sunday Night | 46°F | Mostly Cloudy | 1 mph N | 6% |
| Monday | 57°F | Mostly Cloudy then Slight Chance Light Rain | 2 mph ESE | 15% |
| Monday Night | 47°F | Chance Light Rain | 3 mph SSE | 37% |
| Tuesday | 59°F | Chance Light Rain | 5 mph SSE | 47% |
| Tuesday Night | 49°F | Chance Light Rain | 5 mph SSE | 45% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portland, OR
Last spring frost
Mar 29
First fall frost
Nov 9
Growing season
223 days
Hardiness zone
9a
Explore more for Portland, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Vancouver Pearson Ap, Wa (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.