Portland, OR Weather & Growing Conditions
Today
57°F
Mostly Cloudy then Light Rain Likely
Rain likely after 4pm. Mostly cloudy. High near 57, with temperatures falling to around 54 in the afternoon. South wind around 2 mph. Chance of precipitation is 60%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Mostly Cloudy then Light Rain Likely | 2 mph S | 63% |
| Tonight | 48°F | Light Rain | 2 to 6 mph S | 86% |
| Thursday | 56°F | Partly Sunny | 3 mph SSW | 5% |
| Thursday Night | 45°F | Patchy Fog | 2 mph E | 6% |
| Friday | 55°F | Chance Light Rain | 3 mph SSE | 48% |
| Friday Night | 48°F | Chance Light Rain then Mostly Cloudy | 2 mph ESE | 48% |
| Saturday | 63°F | Partly Sunny then Slight Chance Light Rain | 2 mph SE | 15% |
| Saturday Night | 51°F | Light Rain | 2 to 10 mph S | 79% |
| Sunday | 57°F | Light Rain Likely | 1 to 8 mph WSW | 58% |
| Sunday Night | 46°F | Mostly Cloudy | 1 mph NNE | 6% |
| Monday | 56°F | Mostly Cloudy | 2 mph E | 14% |
| Monday Night | 47°F | Chance Light Rain | 5 mph SSE | 35% |
| Tuesday | 58°F | Chance Light Rain | 5 mph SSE | 45% |
| Tuesday Night | 49°F | Chance Light Rain | 2 to 6 mph SSE | 45% |
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 22
Growing season
251 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 Wfo, Or (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.