Chattanooga
Tennessee, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Chattanooga, TN

A stunning aerial panorama of the area of Chattanooga, Tennessee, a distant white skyline in the horizon and mountains
A stunning aerial panorama of the area of Chattanooga, Tennessee, a distant white skyline in the horizon and mountains
The first month of the winter, Diciembre, is also a fresh month in Chattanooga, Tennessee, with average temperature varying between 33.1°F (0.6°C) and 52.2°F (11.2°C).

Temperature

In Diciembre, the average high-temperature decreases, from a comfortable 62.2°F (16.8°C) in Noviembre, to a fresh 52.2°F (11.2°C). The average low-temperature, in Chattanooga, is 33.1°F (0.6°C).

Humidity

In Diciembre, the average relative humidity is 72.9%.

Rainfall

In Chattanooga, it is raining for 11.1 days, with typically 4.9" (124.5mm) of accumulated precipitation. Throughout the year, in Chattanooga, there are 119.6 rainfall days, and 52.48" (1332.9mm) of precipitation is accumulated.

Snowfall

Months with snowfall are Enero through Abril and Diciembre. Diciembre is the first month it typically snows in Chattanooga, Tennessee. Throughout Diciembre, in the average 0.4 snowfall days, it receives 0.3" (7.6mm) of snow. Throughout the year, in Chattanooga, Tennessee, there are 2.7 snowfall days, and 3.9" (99mm) of snow is accumulated.

Daylight

With an average of 9.8h of daylight, Diciembre has the shortest days of the year in Chattanooga.

Sunshine

The month with the least sunshine is Diciembre, with an average of 4.5h of sunshine.

UV index

Diciembre is the month with the lowest UV index in Chattanooga, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in Diciembre in Chattanooga?

In Diciembre, the average high-temperature is 52.2°F (11.2°C), and the average low-temperature is 33.1°F (0.6°C).

What is the average humidity in Diciembre in Chattanooga?

In Diciembre, the average relative humidity in Chattanooga is 72.9%.

How much does it rain in Chattanooga in Diciembre?

In Chattanooga, Tennessee, during Diciembre, the rain falls for 11.1 days and regularly aggregates up to 4.9" (124.5mm) of precipitation.

When does it start to snow in Chattanooga?

Diciembre is the first month it typically snows in Chattanooga. Throughout Diciembre, in the average 0.4 snowfall days, it receives 0.3" (7.6mm) of snow.

What is the month with the shortest days in Chattanooga?

With an average of 9.8h of daylight, Diciembre has the shortest days of the year.

What is the average length of the day in Diciembre in Chattanooga?

The average length of the day in Diciembre in Chattanooga is 9.8h.

What is the month with the least sunshine in Chattanooga?

With an average of 4.5h of sunshine, Diciembre has the least sunshine of the year in Chattanooga, Tennessee.

How many hours of sunshine does Chattanooga have in Diciembre?

In Diciembre, the average sunshine in Chattanooga is 4.5h.

When is the lowest UV index in Chattanooga?

With an average maximum UV index of 2, Diciembre is the month with the lowest UV index.

What is the UV index intensity in Diciembre in Chattanooga?

In Diciembre, the average daily maximum UV index in Chattanooga, Tennessee, is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
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).