Monthly weather forecast and climate
Chattanooga, TN

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

Weather in January

January, like December, is a frosty winter month in Chattanooga, Tennessee, with average temperature ranging between min 30.7°F (-0.7°C) and max 46°F (7.8°C). The coldest month is January, with an average high-temperature of 46°F (7.8°C) and an average low-temperature of 30.7°F (-0.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Chattanooga, is a cool month, with average temperature fluctuating between 35.1°F (1.7°C) and 51.1°F (10.6°C). In Chattanooga, the average high-temperature is relatively the same as in January - a fresh 51.1°F (10.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a moderate month in Chattanooga, Tennessee, with average temperature fluctuating between 41.9°F (5.5°C) and 59.4°F (15.2°C). In Chattanooga, the average high-temperature marginally rises, from a fresh 51.1°F (10.6°C) in February, to a mild 59.4°F (15.2°C). Weather in March »

Weather in April

April is an agreeable spring month in Chattanooga, Tennessee, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 49.5°F (9.7°C). In April, the average high-temperature increases, from a moderate 59.4°F (15.2°C) in March, to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

May, the last month of the spring, in Chattanooga, is a warm month, with average temperature ranging between max 78.1°F (25.6°C) and min 57.2°F (14°C). In May, the average high-temperature marginally rises, from a pleasant 69.4°F (20.8°C) in April, to a warm 78.1°F (25.6°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Chattanooga, Tennessee, with average temperature varying between 64°F (17.8°C) and 85.6°F (29.8°C). In June, the average high-temperature slightly increases, from 78.1°F (25.6°C) in May, to a still warm 85.6°F (29.8°C). Weather in June »

Weather in July

July is a hot summer month in Chattanooga, Tennessee, with average temperature varying between 67.1°F (19.5°C) and 88°F (31.1°C). The warmest month is July, with an average high-temperature of 88°F (31.1°C) and an average low-temperature of 67.1°F (19.5°C). In July, the average heat index is estimated at a torrid 103.1°F (39.5°C). Weather in July »

Weather in August

August, the last month of the summer, in Chattanooga, is another hot month, with average temperature fluctuating between 87.3°F (30.7°C) and 66°F (18.9°C). In Chattanooga, the average high-temperature is practically the same as in July - a still tropical 87.3°F (30.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Chattanooga, Tennessee, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 61.2°F (16.2°C). In September, the average high-temperature marginally drops, from a hot 87.3°F (30.7°C) in August, to a moderately hot 81.9°F (27.7°C). Weather in September »

Weather in October

October, the same as September, in Chattanooga, Tennessee, is another pleasant autumn month, with average temperature ranging between max 70.2°F (21.2°C) and min 49.3°F (9.6°C). In Chattanooga, the average high-temperature in October drops, from a moderately hot 81.9°F (27.7°C) in September, to a pleasant 70.2°F (21.2°C). Weather in October »

Weather in November

November, the last month of the autumn, in Chattanooga, is also a moderate month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 57.6°F (14.2°C). In November, the average high-temperature decreases, from an agreeable 70.2°F (21.2°C) in October, to a moderate 57.6°F (14.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Chattanooga, Tennessee, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 50.2°F (10.1°C). In Chattanooga, Tennessee, the average high-temperature slightly decreases, from a moderate 57.6°F (14.2°C) in November, to a fresh 50.2°F (10.1°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Chattanooga?

January is the coldest month in Chattanooga, Tennessee, with an average high-temperature of 46°F (7.8°C) and an average low-temperature of 30.7°F (-0.7°C).

How many days does it rain in Chattanooga?

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

When does it snow in Chattanooga?

January through April, November and December are months with snowfall.

How much does it snow in Chattanooga?

In Chattanooga, during the entire year, snow falls for 13.2 days, and aggregates up to 4.17" (106mm) of snow.

What are the months with the lowest UV index in Chattanooga?

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

What is the snowiest month in Chattanooga?

February is the month with the most snowfall. Snow falls for 3.8 days and accumulates 1.85" (47mm) of snow.

When it does not snow in Chattanooga?

In Chattanooga, Tennessee, snow does not fall in May through October.

When is the highest UV index in Chattanooga?

Months with the highest UV index in Chattanooga, Tennessee, are May through August, with an average maximum UV index of 6.

What is the least humid month in Chattanooga?

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

When are the longest days in Chattanooga?

The month with the longest days is June, with an average of 14.5h of daylight.

What month has the most sunshine in Chattanooga?

June has the most sunshine of the year in Chattanooga, Tennessee, with an average of 10.3h of sunshine.

What is the warmest month in Chattanooga?

With an average high-temperature of 88°F (31.1°C) and an average low-temperature of 67.1°F (19.5°C), July is the warmest month in Chattanooga, Tennessee.

What is the driest month in Chattanooga?

The month with the least rainfall is September when the rain falls for 12.5 days and typically collects 2.56" (65mm) of precipitation.

What is the most humid month in Chattanooga?

The most humid month is December, with an average relative humidity of 80%.

What is the rainiest month in Chattanooga?

December is the month with the most rainfall. Rain falls for 13.7 days and accumulates 4.37" (111mm) of precipitation.

What is the month with the shortest days in Chattanooga?

December has the shortest days of the year, with an average of 9.8h of daylight.

What is the month with the least sunshine in Chattanooga?

December has the least sunshine of the year, with an average of 4.9h of sunshine.

Average pressure
Chattanooga, TN

Average pressure - Chattanooga, TN

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

[Resources]

Average wind speed
Chattanooga, TN

Average wind speed - Chattanooga, TN

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).

[Resources]

Average humidity
Chattanooga, TN

Average humidity - Chattanooga, TN

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

[Resources]

Average rainfall
Chattanooga, TN

Average rainfall - Chattanooga, TN

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

[Resources]

Average rainfall days
Chattanooga, TN

Average rainfall days - Chattanooga, TN

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).

[Resources]

Average snowfall
Chattanooga, TN

Average snowfall - Chattanooga, TN

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

[Resources]

Average snowfall days
Chattanooga, TN

Average snowfall days - Chattanooga, TN

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

[Resources]

Average daylight / Average sunshine
Chattanooga, TN

Average daylight / Average sunshine - Chattanooga, TN

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

The month with the most sunshine is June (Average sunshine: 10.3h).
The month with the least sunshine is December (Average sunshine: 4.9h).

[Resources]

Average sunshine days
Chattanooga, TN

Average sunshine days - Chattanooga, TN

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

[Resources]

Average UV index
Chattanooga, TN

Average UV index - Chattanooga, TN

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

[Resources]

Average visibility
Chattanooga, TN

Average visibility - Chattanooga, TN

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

[Resources]