Weather World
Signal Mountain, TN Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Signal Mountain Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  | | |  | | | | |  | |
| Chance of T-Storm | Mostly Sunny | Mostly Clear | Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Sunny |
| Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 67°FLo: 19°C | Hi: 93°FHi: 34°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 67°FLo: 19°C | Hi: 90°FHi: 32°C |
| POP: 30% | POP: 20% | POP: 30% | POP: 40% | POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 706 PM EDT Mon Aug 17 2026 
Signal Mountain Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Signal Mountain Weather Map
Signal Mountain Quick Facts
Signal Mountain Forecast Discussion
Issued: 738 PM EDT Mon Aug 17 2026
Key Messages
Updated at 733 PM EDT Mon Aug 17 2026
- Showers and storms will move through the area today into this evening, and some will likely be strong to severe with damaging winds the primary threat. Localized flash flooding is also possible especially north.
- Drier and not quite as hot mid week, then chances for showers and storms increase again Thursday into the weekend.
Discussion
... Issued at 238 PM EDT Mon Aug 17 2026
The heat advisory will be allowed to continu...