Decatur, TN Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Decatur, TN in one place.
Patchy fog before 9am. Sunny, with a high near 85. Southwest wind 0 to 5 mph.
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: Oct 12, 2026 3:14 AM EDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Decatur, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 3:14 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur
Wednesday looks like the warmest upcoming period in Decatur at 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Friday at about 0 to 15 mph W.
The forecast from Oct 13 through Oct 18 stays mostly dry.
Forecast Details
- Last updated
- Oct 12, 2026 3:14 AM EDT
- Coverage
- 6 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
Clear, with a low around 57. South wind 0 to 5 mph.
Sunny, with a high near 86. Northwest wind around 0 mph.
Mostly clear, with a low around 61. Southwest wind around 0 mph.
Sunny, with a high near 86.
Mostly clear, with a low around 62.
Sunny, with a high near 81.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 61.
Mostly clear, with a low around 39.
Sunny, with a high near 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Patchy Fog then Sunny
|
85°F |
0 to 5 mph
SW
|
|
Tuesday Night
Oct 13
|
Clear
|
57°F |
0 to 5 mph
S
|
|
Wednesday
Oct 14
|
Sunny
|
86°F |
0 mph
|
|
Wednesday Night
Oct 14
|
Mostly Clear
|
61°F |
0 mph
|
|
Thursday
Oct 15
|
Sunny
|
86°F |
0 to 5 mph
W
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
62°F |
0 mph
|
|
Friday
Oct 16
|
Sunny
|
81°F |
0 to 15 mph
W
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
47°F |
10 to 15 mph
N
|
|
Saturday
Oct 17
|
Mostly Sunny
|
61°F |
15 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
39°F |
5 to 15 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Decatur.
Nearby forecast pages are not available for this location yet.
