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 a frosty winter month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 46°F (7.8°C). January is the coldest month, 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 temperature in the range of an average high of 51.1°F (10.6°C) and an average low of 35.1°F (1.7°C). In Chattanooga, the average high-temperature in February is practically the same as in January - a cool 51.1°F (10.6°C). Weather in February »

Weather in March

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

Weather in April

April in Chattanooga, Tennessee, is an agreeable spring month, with an average temperature fluctuating between 69.4°F (20.8°C) and 49.5°F (9.7°C). In April, the average high-temperature rises 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 temperature in the range of an average low of 57.2°F (14°C) and an average high of 78.1°F (25.6°C). In Chattanooga, Tennessee, the average high-temperature in May slightly increases 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

June, the first month of the summer in Chattanooga, is also a moderately hot month, with an average temperature fluctuating between 85.6°F (29.8°C) and 64°F (17.8°C). In June, the average high-temperature marginally rises from 78.1°F (25.6°C) in May to a still moderately hot 85.6°F (29.8°C). Weather in June »

Weather in July

July is a hot summer month in Chattanooga, Tennessee, with an average temperature fluctuating 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 sweltering 102.2°F (39°C). Weather in July »

Weather in August

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

Weather in September

September, the first month of the autumn in Chattanooga, is also a moderately hot month, with an average temperature fluctuating between 61.2°F (16.2°C) and 81.9°F (27.7°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 another pleasant autumn month in Chattanooga, Tennessee, with an average temperature ranging between min 49.3°F (9.6°C) and max 70.2°F (21.2°C). In October, the average high-temperature drops from a warm 81.9°F (27.7°C) in September to a pleasant 70.2°F (21.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Chattanooga, Tennessee, with an average temperature fluctuating between 40.1°F (4.5°C) and 57.6°F (14.2°C). In Chattanooga, the average high-temperature in November 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

December, the first month of the winter in Chattanooga, is also a fresh month, with temperature in the range of an average high of 50.2°F (10.1°C) and an average low of 36.3°F (2.4°C). In Chattanooga, the average high-temperature in December slightly decreases from a moderate 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?

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

How much does it rain in Chattanooga?

Throughout the year, there are 174.4 rainfall days, and 41.14" (1045mm) of precipitation is accumulated.

When does it snow in Chattanooga?

Months with snowfall in Chattanooga, Tennessee, are January through April, November and December.

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 is the month with the lowest UV index in Chattanooga?

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

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 is Daylight Saving Time (DST) in Chattanooga?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Chattanooga, 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?

May through October are months without snowfall in Chattanooga.

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

The 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.

When are the longest days in Chattanooga?

With an average of 14h and 29min of daylight, June has the longest days of the year.

What month has the most sunshine in Chattanooga?

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

What is the warmest month in Chattanooga?

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).

What is the driest month in Chattanooga?

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

What is the most humid month in Chattanooga?

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

What is the wettest month in Chattanooga?

The month with the most rainfall in Chattanooga is December, when the rain falls for 13.7 days and typically aggregates up to 4.37" (111mm) of precipitation.

What is the month with the shortest days in Chattanooga?

December has the shortest days of the year in Chattanooga, Tennessee, with an average of 9h and 51min of daylight.

What is the month with the least sunshine in Chattanooga?

December has the least sunshine of the year in Chattanooga, Tennessee, 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"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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