Duncan, OK Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, OK in one place.
Sunny, with a high near 96. Heat index values as high as 97. South wind 10 to 15 mph, with gusts as high as 21 mph.
Local Weather Overview
This forecast page for Duncan, OK 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: May 30, 2026 8:57 PM CDT.
The active forecast window currently covers May 31 to Jun 6, 2026 for Duncan, OK.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 31 to Jun 6, 2026
- Latest sync
- May 30, 2026 8:57 PM CDT
- Forecast office
- OUN
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Sunday looks like the warmest upcoming period in Duncan at 96 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Friday at about 9 to 16 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 8:57 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- OUN
- Radar station
- KFDR
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 73. South wind 7 to 15 mph, with gusts as high as 20 mph.
Sunny, with a high near 96. Heat index values as high as 97. South wind 6 to 9 mph.
Mostly clear, with a low around 71. East southeast wind 5 to 10 mph.
Sunny, with a high near 92.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 20%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
May 31
|
Sunny
|
96°F |
10 to 15 mph
S
|
|
Sunday Night
May 31
|
Mostly Clear
|
73°F |
7 to 15 mph
S
|
|
Monday
Jun 1
|
Sunny
|
96°F |
6 to 9 mph
S
|
|
Monday Night
Jun 1
|
Mostly Clear
|
71°F |
5 to 10 mph
ESE
|
|
Tuesday
Jun 2
|
Sunny
|
92°F |
5 to 12 mph
E
|
|
Tuesday Night
Jun 2
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
70°F |
7 to 13 mph
E
|
|
Wednesday
Jun 3
|
Slight Chance Showers And Thunderstorms
|
87°F |
9 to 13 mph
ESE
|
|
Wednesday Night
Jun 3
|
Slight Chance Showers And Thunderstorms
|
67°F |
8 to 13 mph
SE
|
|
Thursday
Jun 4
|
Chance Showers And Thunderstorms
|
86°F |
9 to 14 mph
SSE
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
68°F |
8 to 14 mph
SSE
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
87°F |
9 to 16 mph
S
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
69°F |
8 to 15 mph
SSE
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms
|
87°F |
8 to 12 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.
