Decatur, TN Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Decatur, TN in one place.
A slight chance of rain showers between 8am and 11am, then showers and thunderstorms likely. Partly sunny, with a high near 84. East wind around 0 mph. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Decatur, 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: Jul 12, 2026 2:43 AM EDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Decatur, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 2:43 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur
Saturday looks like the warmest upcoming period in Decatur at 89 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Friday at about 0 to 5 mph N.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 12, 2026 2:43 AM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- MRX
- Radar station
- KHTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 2am. Mostly cloudy, with a low around 68. East wind around 0 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 8am. Mostly 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 71. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Showers And Thunderstorms Likely
|
84°F |
0 mph
|
|
Tuesday Night
Jul 14
|
Showers And Thunderstorms Likely
|
68°F |
0 mph
|
|
Wednesday
Jul 15
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
0 mph
|
|
Wednesday Night
Jul 15
|
Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
0 mph
|
|
Thursday
Jul 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
0 mph
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
0 mph
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
N
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
71°F |
0 mph
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
89°F |
0 to 5 mph
N
|
Nearby Forecasts
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Nearby forecast pages are not available for this location yet.
