Tri-City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tri-City, a community in Douglas County, Oregon.
Overnight
57°F
Smoke
Smoke. Clear. Low around 57, with temperatures rising to around 59 overnight. West northwest wind around 3 mph.
7-day forecast for Tri-City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Smoke | 3 mph WNW | 0% |
| Tuesday | 98°F | Areas Of Smoke | 1 to 9 mph NW | 0% |
| Tuesday Night | 63°F | Areas Of Smoke | 2 to 9 mph NW | 0% |
| Wednesday | 101°F | Sunny | 0 to 10 mph NW | 0% |
| Wednesday Night | 62°F | Clear | 0 to 10 mph NNW | 0% |
| Thursday | 99°F | Sunny | 0 to 9 mph NW | 0% |
| Thursday Night | 61°F | Clear | 0 to 9 mph NW | 0% |
| Friday | 95°F | Sunny | 0 to 8 mph NNW | 0% |
| Friday Night | 60°F | Clear | 1 to 8 mph NNW | 0% |
| Saturday | 90°F | Sunny | 1 to 9 mph NNW | 0% |
| Saturday Night | 57°F | Clear | 1 to 9 mph NNW | 0% |
| Sunday | 85°F | Sunny | 1 to 10 mph NNW | 0% |
| Sunday Night | 56°F | Mostly Clear | 2 to 10 mph NNW | 0% |
| Monday | 84°F | Sunny | 2 to 9 mph N | 0% |
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 Aug 4, 2026.