October weather forecast
Chattanooga, TN

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

Weather in October

The nature of Chattanooga's October weather is defined by its fall atmosphere, characterized by a marked decrease in temperatures. The cooler climatic conditions provide relief from the previously high temperatures. Bright, clear skies marked by fewer clouds, paired with the changing foliage, make this month particularly picturesque. The temperature begins a steady decline into the colder days of November.

Temperature

Arrival of October comes with a reduction in the average high-temperature, falling from a moderately hot 81.9°F (27.7°C) in September to a pleasant 70.2°F (21.2°C). During October, the temperature tends to dip to an average of 49.3°F (9.6°C) at night.

Humidity

June through August, October and November, with an average relative humidity of 75%, are the least humid months in Chattanooga.

Rainfall

In Chattanooga, during October, the rain falls for 10.6 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 174.4 rainfall days, and 41.14" (1045mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In October, the average length of the day is 11h and 17min.
On the first day of the month, sunrise is at 7:36 am and sunset at 7:24 pm. On the last day of October, sunrise is at 8:02 am and sunset at 6:47 pm EDT.

Sunshine

In October, the average sunshine is 7.2h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

October temperatures vary between a high-temperature of 70.2°F (21.2°C) and a low-temperature of 49.3°F (9.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 87.8°F (31°C).

What is the least humid month?

The months with the lowest humidity are June through August, October and November, with an average relative humidity of 75%.

What is the average humidity in October?

The average relative humidity in October is 75%.

How much does it rain in October?

In October, the rain falls for 10.6 days. Throughout October, 2.8" (71mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

Does it snow in October?

In Chattanooga, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Chattanooga have in October?

In Chattanooga, the average day length in October is 11h and 17min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 7:36 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 6:47 pm EDT.

How long on average sun shines in October?

In October, the average sunshine duration is 7.2h.

What is the UV index intensity in October in Chattanooga?

In Chattanooga, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Chattanooga, TN

Average temperature in October - Chattanooga, TN
  • Average high temperature in October: 70.2°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 October: 49.3°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 October
Chattanooga, TN

Average pressure in October - Chattanooga, TN
  • Average pressure in October: 30.06"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 October
Chattanooga, TN

Average wind speed in October - Chattanooga, TN
  • Average wind speed in October: 5.1mph

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 October
Chattanooga, TN

Average humidity in October - Chattanooga, TN
  • Average humidity in October: 75%

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 October
Chattanooga, TN

Average rainfall in October - Chattanooga, TN
  • Average rainfall in October: 2.8"

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 October
Chattanooga, TN

Average rainfall days in October - Chattanooga, TN
  • Average rainfall days in October: 10.6 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 October
Chattanooga, TN

Average snowfall in October - Chattanooga, TN
  • Average snowfall in October: 0"

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 October
Chattanooga, TN

Average snowfall days in October - Chattanooga, TN
  • Average snowfall days in October: 0 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 October /
Average sunshine in October
Chattanooga, TN

Average daylight in October / Average sunshine in October - Chattanooga, TN
  • Average daylight in October: 11h and 2min

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 October: 7h and 1min

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 October
Chattanooga, TN

Average sunshine days in October - Chattanooga, TN
  • Average sunshine days in October: 18.9 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 October
Chattanooga, TN

Average UV index in October - Chattanooga, TN
  • Average UV index in October: 3

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 October
Chattanooga, TN

Average cloud cover in October - Chattanooga, TN
  • Average cloud cover in October: 33

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 October
Chattanooga, TN

Average visibility in October - Chattanooga, TN
  • Average visibility in October: 6mi

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

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location