Climate and monthly weather forecast
Chattanooga, TN

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

Weather in January

January, the same as December, in Chattanooga, Tennessee, is another chilly winter month, with an average temperature varying between 30.7°F (-0.7°C) and 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 fresh month, with an average temperature varying between 35.1°F (1.7°C) and 51.1°F (10.6°C). In Chattanooga, the average high-temperature in February is essentially 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 temperature in the range of an average high of 59.4°F (15.2°C) and an average low of 41.9°F (5.5°C). In March, 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 a pleasant spring month in Chattanooga, Tennessee, with an average temperature ranging between min 49.5°F (9.7°C) and max 69.4°F (20.8°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 an average temperature ranging between min 57.2°F (14°C) and max 78.1°F (25.6°C). In Chattanooga, the average high-temperature in May slightly increases from a pleasant 69.4°F (20.8°C) in April to a moderately hot 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 an average temperature varying between 85.6°F (29.8°C) and 64°F (17.8°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 in Chattanooga, Tennessee, is a tropical summer month, with an average temperature fluctuating between 88°F (31.1°C) and 67.1°F (19.5°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). The average heat index in July is estimated at a sweltering 103.1°F (39.5°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Chattanooga, Tennessee, with an average temperature ranging between min 66°F (18.9°C) and max 87.3°F (30.7°C). In Chattanooga, the average high-temperature in August is essentially 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 an average temperature varying between 81.9°F (27.7°C) and 61.2°F (16.2°C). In Chattanooga, the average high-temperature in September slightly decreases from a tropical 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, like September, is an agreeable autumn month in Chattanooga, Tennessee, with an 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 decreases from a warm 81.9°F (27.7°C) in September to an agreeable 70.2°F (21.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Chattanooga, is another mild month, with an average temperature fluctuating between 40.1°F (4.5°C) and 57.6°F (14.2°C). In November, the average high-temperature drops from an agreeable 70.2°F (21.2°C) in October to a mild 57.6°F (14.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Chattanooga, Tennessee, with an average temperature ranging between max 50.2°F (10.1°C) and min 36.3°F (2.4°C). In December, the average high-temperature marginally drops from a mild 57.6°F (14.2°C) in November to a cool 50.2°F (10.1°C). Weather in December »
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FAQ

What is the coldest month in Chattanooga?

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

How many days does it rain in Chattanooga?

In Chattanooga, Tennessee, 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 in Chattanooga.

How many days does it snow in Chattanooga?

Throughout the year, in Chattanooga, Tennessee, there are 13.2 snowfall days, and 4.17" (106mm) of snow is accumulated.

When is the lowest UV index in Chattanooga?

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

When does it snow the most in Chattanooga?

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

When is Daylight Saving Time (DST) in Chattanooga?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Chattanooga?

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

What is the month with the highest UV index in Chattanooga?

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

What are the least humid months 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 in Chattanooga, Tennessee, is June, with an average of 14h and 29min of daylight.

What month has the most sunshine in Chattanooga?

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

What is the warmest month in Chattanooga?

The warmest month in Chattanooga, Tennessee, 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).

What is the driest month in Chattanooga?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.56" (65mm) of precipitation.

What is the most humid month in Chattanooga?

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

What is the wettest month in Chattanooga?

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

What is the month with the shortest days in Chattanooga?

The month with the shortest days is December, with an average of 9h and 51min of daylight.

What is the month with the least sunshine in Chattanooga?

With an average of 4.9h of sunshine, December has the least sunshine of the year in Chattanooga, Tennessee.

Average pressure
Chattanooga, TN

Average pressure - Chattanooga, TN

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

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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).

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Average humidity
Chattanooga, TN

Average humidity - Chattanooga, TN

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%).

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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").

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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).

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Average snowfall
Chattanooga, TN

Average snowfall - Chattanooga, TN

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").

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Average snowfall days
Chattanooga, TN

Average snowfall days - Chattanooga, TN

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).

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Average daylight / Average sunshine
Chattanooga, TN

Average daylight / Average sunshine - Chattanooga, TN

The month with the longest days is June (Average daylight: 14h and 29min).
The month with the shortest days is December (Average daylight: 9h and 51min).

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).

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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).

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Average UV index
Chattanooga, TN

Average UV index - Chattanooga, TN

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).

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Average visibility
Chattanooga, TN

Average visibility - Chattanooga, TN

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).

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