Gallatin Weather Forecast
- 23
- 37
Sunny
- 35
- 49
Mostly Sunny
- 42
- 52
Rain Showers Likely
- 24
- 59
Rain Showers
- 29
- 41
Slight Chance Rain Showers
- 48
- 57
Chance Rain Showers
Today 15 Dec Sumner
Sunny. Highs in the upper 30s. Southeast Winds around 5 Mph, becoming south this afternoon.
Tonight 15 Dec Sumner
Clear. Lows in the lower 20s. South Winds around 5 Mph.
Gallatin Temperature Statistics
December Temperature
Nashville, Nashville International Airport (23 miles)
Lowest 1 December, 2025
26.1 °FAverage December
37.9 °FHighest 12 December, 2025
57.9 °F
Climate (2020–Present)
Nashville, Nashville International Airport (23 miles)
Average Low 2020–2025
52.6 °FAverage 2020–2025
62.6 °FAverage High 2020–2025
73 °F