Duncan, MO Weather Forecast
Local 7-day forecast
Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, MO in one place.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 95. Heat index values as high as 104. South wind 5 to 8 mph.
Local Weather Overview
This forecast page for Duncan, MO 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 15, 2026 12:22 AM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Duncan, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 12:22 AM CDT
- Forecast office
- SGF
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Wednesday looks like the warmest upcoming period in Duncan at 95 degrees F.
Sunday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Saturday at about 6 to 10 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 12:22 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- SGF
- Radar station
- KSGF
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. South wind around 7 mph.
Sunny, with a high near 95.
Mostly clear, with a low around 71.
Sunny, with a high near 94.
Mostly clear, with a low around 70.
Sunny, with a high near 92.
Mostly clear, with a low around 68.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 88.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
5 to 8 mph
S
|
|
Wednesday Night
Sep 16
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
7 mph
S
|
|
Thursday
Sep 17
|
Sunny
|
95°F |
6 mph
SW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
71°F |
3 mph
S
|
|
Friday
Sep 18
|
Sunny
|
94°F |
2 to 7 mph
S
|
|
Friday Night
Sep 18
|
Mostly Clear
|
70°F |
6 mph
S
|
|
Saturday
Sep 19
|
Sunny
|
92°F |
6 to 10 mph
S
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
68°F |
8 mph
S
|
|
Sunday
Sep 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
6 to 9 mph
SW
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
64°F |
6 to 9 mph
N
|
|
Monday
Sep 21
|
Chance Rain Showers
|
81°F |
6 to 9 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.