January weather forecast
Chattanooga, TN

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Panorama of the area of Chattanooga, Tennessee
Panorama of the area of Chattanooga, Tennessee

Weather in January

In Chattanooga, Tennessee, the first month of the year is marked by crisp and cold weather conditions, swinging from a low of 30.7°F (-0.7°C) to a high of 46°F (7.8°C). A notable highlight of this month is the relatively high humidity level, contributing to the chilly feel. The weather pattern transitions from December's cold and more often snow-clad conditions to a drier and relatively warmer climate as the month progresses. This weather transformation continues into the next month, as February brings slightly milder temperatures and an increased chance of rain.

Temperature

In Chattanooga, Tennessee, January is the month with the lowest recorded average temperatures, measuring a high of 46°F (7.8°C) and a low of 30.7°F (-0.7°C).

Humidity

The average relative humidity in January is 76%.

Rainfall

In Chattanooga, during January, the rain falls for 13.2 days and regularly aggregates up to 3.62" (92mm) of precipitation. In Chattanooga, during the entire year, the rain falls for 174.4 days and collects up to 41.14" (1045mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Chattanooga. In Chattanooga, Tennessee, in January, during 4.1 snowfall days, 0.87" (22mm) of snow is typically accumulated. Throughout the year, in Chattanooga, Tennessee, there are 13.2 snowfall days, and 4.17" (106mm) of snow is accumulated.

Daylight

In January, the average length of the day is 10h and 7min.
On the first day of January in Chattanooga, Tennessee, sunrise is at 7:49 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 6:08 pm EST.

Sunshine

The average sunshine in January in Chattanooga is 5.3h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Feb 14, 2024 | Published by: Weather Atlas | About Us

Frequently asked questions

What part of the year is the coldest in Chattanooga?

With average high temperatures of 46°F (7.8°C) and lows of 30.7°F (-0.7°C), January is the coldest month in Chattanooga, Tennessee.

What are January temperatures in Chattanooga?

In January, the average high-temperature and low-temperature in Chattanooga, Tennessee, are 46°F (7.8°C) and 30.7°F (-0.7°C) respectively.

What is the average humidity in January in Chattanooga?

The average relative humidity in January in Chattanooga, Tennessee, is 76%.

How much does it rain in Chattanooga in January?

In January, in Chattanooga, Tennessee, the rain falls for 13.2 days. Throughout January, 3.62" (92mm) of precipitation is accumulated.

How much does it snow in Chattanooga in January?

In Chattanooga, during January, snow falls for 4.1 days and regularly aggregates up to 0.87" (22mm) of snow.

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

In January, the average day length is 10h and 7min.

When is the sunrise / sunset in January in Chattanooga?

In January, on the first day of the month, sunrise is at 7:49 am and sunset at 5:40 pm. On the last day of the month, in Chattanooga, Tennessee, sunrise is at 7:40 am and sunset at 6:08 pm EST.

How many hours of sunshine does Chattanooga have in January?

In Chattanooga, the average sunshine duration in January is 5.3h.

When is the lowest UV index in Chattanooga?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Chattanooga.

How high is the UV index in January in Chattanooga?

The average daily maximum UV index in January in Chattanooga, Tennessee, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Chattanooga, TN

Average temperature in January - Chattanooga, TN
  • Average high temperature in January: 46°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in January: 30.7°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average pressure in January
Chattanooga, TN

Average pressure in January - Chattanooga, TN
  • Average pressure in January: 30.17"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in January
Chattanooga, TN

Average wind speed in January - Chattanooga, TN
  • Average wind speed in January: 6.2mph

The windiest month (with the highest average wind speed) is February (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in January
Chattanooga, TN

Average humidity in January - Chattanooga, TN
  • Average humidity in January: 76%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, July, August, October and November (75%).

Average rainfall in January
Chattanooga, TN

Average rainfall in January - Chattanooga, TN
  • Average rainfall in January: 3.62"

The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is September (2.56").

Average rainfall days in January
Chattanooga, TN

Average rainfall days in January - Chattanooga, TN
  • Average rainfall days in January: 13.2 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in January
Chattanooga, TN

Average snowfall in January - Chattanooga, TN
  • Average snowfall in January: 0.87"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Chattanooga, TN

Average snowfall days in January - Chattanooga, TN
  • Average snowfall days in January: 4.1 days

The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Chattanooga, TN

Average daylight in January / Average sunshine in January - Chattanooga, TN
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 5h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in January
Chattanooga, TN

Average sunshine days in January - Chattanooga, TN
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in January
Chattanooga, TN

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in January
Chattanooga, TN

Average cloud cover in January - Chattanooga, TN
  • Average cloud cover in January: 48

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in January
Chattanooga, TN

Average visibility in January - Chattanooga, TN
  • Average visibility in January: 5mi

The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).

Chattanooga, Tennessee, USA

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