Happy Valley, OR Weather & Growing Conditions
Today
57°F
Partly Sunny then Light Rain Likely
Rain likely after 4pm. Partly sunny. High near 57, with temperatures falling to around 54 in the afternoon. South southeast wind around 3 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Partly Sunny then Light Rain Likely | 3 mph SSE | 67% |
| Tonight | 48°F | Light Rain | 3 to 13 mph SSW | 89% |
| Thursday | 57°F | Mostly Sunny | 2 to 6 mph SW | 12% |
| Thursday Night | 44°F | Mostly Cloudy | 3 mph E | 10% |
| Friday | 57°F | Chance Light Rain | 3 mph SSE | 28% |
| Friday Night | 46°F | Chance Light Rain then Mostly Cloudy | 1 to 5 mph SE | 28% |
| Saturday | 62°F | Partly Sunny then Slight Chance Light Rain | 1 to 5 mph SE | 16% |
| Saturday Night | 49°F | Light Rain | 2 to 10 mph SSE | 75% |
| Sunday | 56°F | Light Rain Likely | 2 to 9 mph SSW | 55% |
| Sunday Night | 44°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph E | 15% |
| Monday | 55°F | Chance Light Rain | 2 mph E | 29% |
| Monday Night | 46°F | Chance Light Rain | 2 to 6 mph SSE | 36% |
| Tuesday | 57°F | Chance Light Rain | 2 to 6 mph S | 38% |
| Tuesday Night | 47°F | Chance Light Rain | 2 to 7 mph SSE | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Happy Valley, OR
Last spring frost
Mar 18
First fall frost
Nov 18
Growing season
244 days
Hardiness zone
8b
Explore more for Happy Valley, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Oregon City, Or (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.