Climate and monthly weather forecast
Marietta, GA

Weather in January

January, the same as December, in Marietta, Georgia, is another chilly winter month, with an average temperature ranging between min 34.2°F (1.2°C) and max 49.6°F (9.8°C). The coldest month is January, with an average high-temperature of 49.6°F (9.8°C) and an average low-temperature of 34.2°F (1.2°C). Weather in January »

Weather in February

The last month of the winter, February, is a fresh month in Marietta, Georgia, with an average temperature ranging between min 38.1°F (3.4°C) and max 54.9°F (12.7°C). In Marietta, Georgia, the average high-temperature in February is almost the same as in January - a fresh 54.9°F (12.7°C). Weather in February »

Weather in March

March, the first month of the spring in Marietta, is a comfortable month, with temperature in the range of an average high of 62.6°F (17°C) and an average low of 45°F (7.2°C). In March, the average high-temperature slightly increases from a fresh 54.9°F (12.7°C) in February to an enjoyable 62.6°F (17°C). Weather in March »

Weather in April

April is an agreeable spring month in Marietta, Georgia, with an average temperature varying between 72.5°F (22.5°C) and 53.1°F (11.7°C). In Marietta, Georgia, the average high-temperature in April rises from an enjoyable 62.6°F (17°C) in March to an agreeable 72.5°F (22.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Marietta, Georgia, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 80.8°F (27.1°C). In May, the average high-temperature marginally rises from a pleasant 72.5°F (22.5°C) in April to a warm 80.8°F (27.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Marietta, Georgia, with temperature in the range of an average high of 87.4°F (30.8°C) and an average low of 67.8°F (19.9°C). In June, the average high-temperature marginally rises from a warm 80.8°F (27.1°C) in May to a hot 87.4°F (30.8°C). Weather in June »

Weather in July

July, the same as June, in Marietta, Georgia, is another tropical summer month, with an average temperature varying between 71.4°F (21.9°C) and 90.5°F (32.5°C). With an average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 71.4°F (21.9°C), July is the warmest month. In July, the average heat index is computed to be an extremely hot 107.6°F (42°C). Weather in July »

Weather in August

August, the last month of the summer in Marietta, is another tropical month, with an average temperature varying between 70.3°F (21.3°C) and 89.4°F (31.9°C). In Marietta, the average high-temperature in August is almost the same as in July - a still tropical 89.4°F (31.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Marietta, Georgia, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 84°F (28.9°C). In Marietta, the average high-temperature in September slightly decreases from a tropical 89.4°F (31.9°C) in August to a warm 84°F (28.9°C). Weather in September »

Weather in October

October, the same as September, in Marietta, Georgia, is another pleasant autumn month, with an average temperature ranging between max 72.7°F (22.6°C) and min 53.6°F (12°C). In October, the average high-temperature decreases from a warm 84°F (28.9°C) in September to a pleasant 72.7°F (22.6°C). Weather in October »

Weather in November

November, the last month of the autumn in Marietta, is another comfortable month, with an average temperature fluctuating between 43.7°F (6.5°C) and 61°F (16.1°C). In Marietta, the average high-temperature in November drops from a pleasant 72.7°F (22.6°C) in October to a comfortable 61°F (16.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Marietta, Georgia, with an average temperature varying between 53.6°F (12°C) and 39°F (3.9°C). In December, the average high-temperature marginally drops from a comfortable 61°F (16.1°C) in November to a fresh 53.6°F (12°C). Weather in December »
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FAQ

What is the coldest month in Marietta?

The coldest month in Marietta, Georgia, is January, with an average high-temperature of 49.6°F (9.8°C) and an average low-temperature of 34.2°F (1.2°C).

How many days does it rain in Marietta?

In Marietta, Georgia, during the entire year, the rain falls for 177.1 days and collects up to 41.93" (1065mm) of precipitation.

When does it snow in Marietta?

Months with snowfall are January through March and December.

What is the snowiest month in Marietta?

The month with the most snowfall in Marietta, Georgia, is January, when snow falls for 1.6 days and typically aggregates up to 0.98" (25mm) of snow.

How many days does it snow in Marietta?

Throughout the year, in Marietta, Georgia, there are 4.5 snowfall days, and 2.6" (66mm) of snow is accumulated.

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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

When is Daylight Saving Time (DST) in Marietta?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Marietta?

April through November are months without snowfall.

What are the months with the highest UV index in Marietta?

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

When are the longest days in Marietta?

June has the longest days of the year in Marietta, Georgia, with an average of 14h and 23min of daylight.

What is the warmest month in Marietta?

July is the warmest month, with an average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 71.4°F (21.9°C).

What month has the most sunshine in Marietta?

July has the most sunshine of the year, with an average of 10.6h of sunshine.

What is the least humid month in Marietta?

The least humid month in Marietta is August, with an average relative humidity of 68%.

What is the rainiest month in Marietta?

The month with the most rainfall in Marietta is August, when the rain falls for 18.8 days and typically aggregates up to 4.88" (124mm) of precipitation.

What is the driest month in Marietta?

October is the month with the least rainfall. Rain falls for 10.2 days and accumulates 2.24" (57mm) of precipitation.

What is the most humid month in Marietta?

With an average relative humidity of 78%, December is the most humid month in Marietta.

What is the month with the shortest days in Marietta?

December has the shortest days of the year, with an average of 9h and 56min of daylight.

What is the month with the least sunshine in Marietta?

With an average of 5h of sunshine, December has the least sunshine of the year in Marietta.

Average temperature
Marietta, GA

Average temperature - Marietta, GA

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

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Average pressure
Marietta, GA

Average pressure - Marietta, GA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed
Marietta, GA

Average wind speed - Marietta, GA

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average rainfall
Marietta, GA

Average rainfall - Marietta, GA

The wettest month (with the highest rainfall) is August (4.88").
The driest month (with the least rainfall) is October (2.24").

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Average rainfall days
Marietta, GA

Average rainfall days - Marietta, GA

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.5 days).

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Average snowfall
Marietta, GA

Average snowfall - Marietta, GA

The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days
Marietta, GA

Average snowfall days - Marietta, GA

The month with the highest number of snowfall days is January (1.6 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
Marietta, GA

Average daylight / Average sunshine - Marietta, GA

The month with the longest days is June (Average daylight: 14h and 23min).
The month with the shortest days is December (Average daylight: 9h and 56min).

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days
Marietta, GA

Average sunshine days - Marietta, GA

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9.6 days).

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Average UV index
Marietta, GA

Average UV index - Marietta, GA

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, February, November and December (UV index 3).

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Average visibility
Marietta, GA

Average visibility - Marietta, GA

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

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