Duncan, IN Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, IN in one place.
Mostly sunny, with a high near 94. Heat index values as high as 100. Southwest wind 5 to 8 mph.
Local Weather Overview
This forecast page for Duncan, IN 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 6:39 PM EDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Duncan, IN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 6:39 PM EDT
- Forecast office
- LMK
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Wednesday looks like the warmest upcoming period in Duncan at 94 degrees F.
Monday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Sunday at about 9 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 6:39 PM EDT
- Coverage
- 6 days
- Time zone
- America/Kentucky/Louisville
- Forecast office
- LMK
- Radar station
- KLVX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Sunny, with a high near 94. West wind 3 to 7 mph.
Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 69. Chance of precipitation is 20%.
Sunny, with a high near 92.
Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
A chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Mostly Sunny
|
94°F |
5 to 8 mph
SW
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
73°F |
5 mph
SW
|
|
Thursday
Sep 17
|
Sunny
|
94°F |
3 to 7 mph
W
|
|
Thursday Night
Sep 17
|
Partly Cloudy
|
72°F |
5 mph
NW
|
|
Friday
Sep 18
|
Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
6 mph
NE
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
69°F |
7 mph
E
|
|
Saturday
Sep 19
|
Sunny
|
92°F |
6 mph
S
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
72°F |
3 to 7 mph
S
|
|
Sunday
Sep 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
9 mph
SW
|
|
Sunday Night
Sep 20
|
Slight Chance Showers And Thunderstorms
|
69°F |
8 mph
SW
|
|
Monday
Sep 21
|
Chance Rain Showers
|
86°F |
8 mph
SW
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
64°F |
6 to 9 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.