December weather forecast and climate
Chattanooga, TN

A stunning aerial panorama of the area of Chattanooga in Tennessee, USA, a distant white skyline in the horizon and mountains in view
A stunning aerial panorama of the area of Chattanooga in Tennessee, USA, a distant white skyline in the horizon and mountains in view

What is the temperature in December in Chattanooga?

The average high-temperature, in December, is 52.2°F (11.2°C), while the average low-temperature is 33.1°F (0.6°C).

How much does it rain in Chattanooga in December?

In December, in Chattanooga, the rain falls for 11.1 days. Throughout December, 4.9" (124.5mm) of precipitation is accumulated.

When does it start to snow in Chattanooga?

December is the first month it typically snows in Chattanooga. Throughout December, in the average 0.4 snowfall days, it receives 0.3" (7.6mm) of snow.
Average temperature in December - Chattanooga, TN
  • Average high temperature in December: 52.1°F

The warmest month (with the highest average high temperature) is July (90.2°F).
The month with the lowest average high temperature is January (50.2°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (69.7°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average humidity in December - Chattanooga, TN
  • Average humidity in December: 72.9%

The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is April (63.8%).

Average rainfall in December - Chattanooga, TN
  • Average rainfall in December: 4.9"

Wettest months (with the highest rainfall) are March and November (5").
The driest month (with the lowest rainfall) is October (3.3").

Average rainfall days in December - Chattanooga, TN
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (11.7 days).
The month with the lowest number of rainy days is October (7.7 days).

Average snowfall in December - Chattanooga, TN
  • Average snowfall in December: 0.3"

The month with the highest snowfall is January (1.7").
Months with the lowest snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in December - Chattanooga, TN
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is January (1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Chattanooga, TN
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in December: 4.5h

The month with most sunshine is June (Average sunshine: 9.2h).
The month with least sunshine is December (Average sunshine: 4.5h).

Average UV index in December - Chattanooga, TN
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).

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