Signal Mountain, TN Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Signal Mountain, TN in one place.
A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 95. South wind 0 to 5 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Signal Mountain, 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: Aug 25, 2026 9:53 AM EDT.
The active forecast window currently covers Aug 26 to Aug 31, 2026 for Signal Mountain, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 26 to Aug 31, 2026
- Latest sync
- Aug 25, 2026 9:53 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Signal Mountain
Monday looks like the warmest upcoming period in Signal Mountain at 92 degrees F.
Friday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 25, 2026 9:53 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
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind 0 to 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 90. South wind 0 to 5 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 70. South wind around 0 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. 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 68. Chance of precipitation is 40%.
Sunny, with a high near 91.
Mostly clear, with a low around 70.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 71. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Aug 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
S
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
70°F |
0 to 5 mph
S
|
|
Thursday
Aug 27
|
Showers And Thunderstorms Likely
|
90°F |
0 to 5 mph
S
|
|
Thursday Night
Aug 27
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
70°F |
0 mph
|
|
Friday
Aug 28
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
0 to 5 mph
E
|
|
Friday Night
Aug 28
|
Chance Showers And Thunderstorms then Partly Cloudy
|
68°F |
0 to 5 mph
N
|
|
Saturday
Aug 29
|
Sunny
|
91°F |
0 mph
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
70°F |
0 mph
|
|
Sunday
Aug 30
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
S
|
|
Sunday Night
Aug 30
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
0 to 5 mph
S
|
|
Monday
Aug 31
|
Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
0 to 5 mph
S
|
|
Monday Night
Aug 31
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
0 to 5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Signal Mountain.
