Three Rivers, OR Weather & Growing Conditions
Today
47°F
Partly Sunny then Chance Rain Showers
A chance of rain showers after 4pm. Partly sunny. High near 47, with temperatures falling to around 40 in the afternoon. West wind 3 to 7 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 47°F | Partly Sunny then Chance Rain Showers | 3 to 7 mph W | 29% |
| Tonight | 31°F | Chance Rain Showers | 5 to 9 mph W | 43% |
| Thursday | 43°F | Mostly Sunny | 0 to 3 mph SW | 1% |
| Thursday Night | 31°F | Mostly Cloudy | 2 to 8 mph SE | 0% |
| Friday | 49°F | Mostly Cloudy | 3 mph S | 1% |
| Friday Night | 34°F | Partly Cloudy | 2 to 9 mph SE | 1% |
| Saturday | 56°F | Mostly Sunny | 3 to 9 mph SE | 1% |
| Saturday Night | 35°F | Rain Showers Likely | 3 to 12 mph S | 66% |
| Sunday | 42°F | Rain Showers Likely | 1 to 9 mph W | 66% |
| Sunday Night | 33°F | Slight Chance Rain Showers then Cloudy | 1 to 7 mph E | 15% |
| Monday | 45°F | Mostly Cloudy | 5 mph SW | 9% |
| Monday Night | 33°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 7 mph SW | 15% |
| Tuesday | 49°F | Slight Chance Rain Showers | 2 to 6 mph S | 24% |
| Tuesday Night | 35°F | Chance Rain Showers | 2 to 16 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Three Rivers, OR
Last spring frost
Jun 7
First fall frost
Sep 18
Growing season
100 days
Hardiness zone
6b
Explore more for Three Rivers, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Wickiup Dam, Or (17.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.