Climate almanac
Signal Mountain
Tennessee, United States · 35.12°, -85.34°
What is the climate like in Signal Mountain?
The best time to visit Signal Mountain is typically September – October, with trip comfort peaking in September (7.1/10). Signal Mountain is warmest in July, when daily highs average 89°F (32°C), and coolest in January, when lows fall to about 34°F (1°C). The wettest month is typically February and the driest is November; the year sees roughly 53 in (1340 mm) of precipitation.
- Best time to visitSeptember – October — comfort peaks in September (7.1/10)
- Warmest monthJuly — average high 89°F (32°C)
- Coolest monthJanuary — average low 34°F (1°C)
- Wettest monthFebruary (6.2 in (158 mm))
- Driest monthNovember (2.9 in (74 mm))
- Annual precipitation53 in (1340 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromChattanooga AP, 16 km away (1938-2026)