Duncan, TN Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, TN in one place.
Mostly clear, with a low around 65. Northwest wind around 0 mph.
Local Weather Overview
This forecast page for Duncan, TN 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 16, 2026 5:09 AM EDT.
The active forecast window currently covers Sep 16 to Sep 22, 2026 for Duncan, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 5:09 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Thursday looks like the warmest upcoming period in Duncan at 88 degrees F.
Overnight is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph N.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 5:09 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- MRX
- Radar station
- KMRX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 87. North wind 0 to 5 mph.
Mostly clear, with a low around 67. South wind 0 to 5 mph.
Sunny, with a high near 88. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 67. Southeast wind 0 to 5 mph.
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. East wind 0 to 5 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. East wind 0 to 5 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 8am. Sunny, with a high near 88. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
A slight 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 50%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 83.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 16
|
Mostly Clear
|
65°F |
0 mph
|
|
Wednesday
Sep 16
|
Sunny
|
87°F |
0 to 5 mph
N
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
67°F |
0 to 5 mph
S
|
|
Thursday
Sep 17
|
Sunny
|
88°F |
0 to 5 mph
NW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
67°F |
0 to 5 mph
SE
|
|
Friday
Sep 18
|
Sunny then Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
E
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
66°F |
0 to 5 mph
E
|
|
Saturday
Sep 19
|
Chance Showers And Thunderstorms
|
88°F |
0 mph
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms
|
66°F |
5 mph
S
|
|
Sunday
Sep 20
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
0 to 5 mph
SW
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
66°F |
0 to 5 mph
S
|
|
Monday
Sep 21
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
86°F |
0 mph
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
65°F |
0 to 5 mph
E
|
|
Tuesday
Sep 22
|
Showers And Thunderstorms Likely
|
83°F |
0 to 5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.