Duncan, OR Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, OR in one place.
Sunny, with a high near 63. North wind 0 to 5 mph.
Local Weather Overview
This forecast page for Duncan, OR is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 14, 2026 8:54 PM PDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Duncan, OR.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 8:54 PM PDT
- Forecast office
- PDT
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Sunday looks like the warmest upcoming period in Duncan at 74 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph N.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 8:54 PM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- PDT
- Radar station
- KPDT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 40. Northwest wind 0 to 5 mph.
A chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 67. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 5am. Partly cloudy, with a low around 42. Chance of precipitation is 40%.
Sunny, with a high near 70.
Mostly clear, with a low around 42.
Sunny, with a high near 72.
Mostly clear, with a low around 42.
Sunny, with a high near 74.
Mostly clear, with a low around 43.
Sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Sunny
|
63°F |
0 to 5 mph
N
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
40°F |
0 to 5 mph
NW
|
|
Thursday
Sep 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
67°F |
0 to 3 mph
NW
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
42°F |
3 mph
SW
|
|
Friday
Sep 18
|
Sunny
|
70°F |
3 mph
SW
|
|
Friday Night
Sep 18
|
Mostly Clear
|
42°F |
2 mph
NW
|
|
Saturday
Sep 19
|
Sunny
|
72°F |
3 mph
W
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
42°F |
2 mph
S
|
|
Sunday
Sep 20
|
Sunny
|
74°F |
2 mph
W
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
43°F |
3 mph
SE
|
|
Monday
Sep 21
|
Sunny
|
72°F |
3 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.