Tri-City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tri-City, a community in Douglas County, Oregon.
This Afternoon
80°F
Sunny
Sunny, with a high near 80. North northwest wind around 7 mph.
7-day forecast for Tri-City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 7 mph NNW | 0% |
| Tonight | 52°F | Mostly Clear | 2 to 8 mph NNW | 0% |
| Saturday | 81°F | Mostly Sunny | 3 to 8 mph NNW | 0% |
| Saturday Night | 53°F | Partly Cloudy | 3 to 8 mph NNW | 0% |
| Sunday | 81°F | Mostly Sunny | 1 to 7 mph NNW | 0% |
| Sunday Night | 54°F | Mostly Clear | 0 to 7 mph NNW | 0% |
| Monday | 77°F | Mostly Sunny | 0 to 7 mph N | 0% |
| Monday Night | 53°F | Mostly Clear | 1 to 7 mph NNW | 0% |
| Tuesday | 75°F | Mostly Sunny | 1 to 7 mph N | 0% |
| Tuesday Night | 48°F | Mostly Clear | 1 to 7 mph N | 0% |
| Wednesday | 76°F | Sunny | 1 to 5 mph ENE | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Thursday | 81°F | Mostly Sunny | 0 to 6 mph NE | 4% |
| Thursday Night | 52°F | Partly Cloudy | 1 to 6 mph NW | 9% |
Forecast source: National Weather Service (api.weather.gov) for Tri-City (42.989, -123.300). Updated through the day.
Growing snapshot for Tri-City
Last spring frost
Mar 31
First fall frost
Nov 6
Growing season
221 days
Hardiness zone
8b
More local growing data for Tri-City: nearby ZIP 97417 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Canyonville
Days Creek
Dillard
Drain
Elkton
Fair Oaks
Gardiner
Glendale
Glide
Green
Lookingglass
Melrose
Myrtle Creek
Oakland
Reedsport
Riddle
Roseburg
Roseburg North
Sutherlin
Winchester Bay
Winston
Yoncalla
Climate data from the nearest NOAA station, Riddle, Or (7.2 mi from Tri-City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.