Climate and monthly weather forecast
Marietta, IN

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Weather in January

January, the same as December, is a wintry winter month in Marietta, Indiana, with an average temperature ranging between min 22.5°F (-5.3°C) and max 35.1°F (1.7°C). The month of January, characterized by an average high of 35.1°F (1.7°C) and a low of 22.5°F (-5.3°C), is recognized as the coldest. Weather in January »

Weather in February

February, the last month of the winter in Marietta, is also a wintry month, with an average temperature varying between 39.6°F (4.2°C) and 25.7°F (-3.5°C). With the advent of February, Marietta's high-temperatures adjust to a still wintry 39.6°F (4.2°C), closely aligning with the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Marietta, Indiana, with an average temperature fluctuating between 50.9°F (10.5°C) and 35.4°F (1.9°C). As February gives way to March, the average high-temperature displays an increase, moving from a cold 39.6°F (4.2°C) to a cool 50.9°F (10.5°C). Weather in March »

Weather in April

April in Marietta, Indiana, is an enjoyable spring month, with an average temperature ranging between max 63°F (17.2°C) and min 45.9°F (7.7°C). April's arrival brings a temperature shift, moving from a cool 50.9°F (10.5°C) in March to an enjoyable 63°F (17.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Marietta, Indiana, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 72.9°F (22.7°C). Marietta's May weather shows an increase in high-temperatures, moving from April's enjoyable 63°F (17.2°C) to a pleasant 72.9°F (22.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Marietta, Indiana, with an average temperature ranging between min 63.5°F (17.5°C) and max 80.6°F (27°C). In Marietta, the onset of June comes with a modest high-temperature shift, transitioning from May's pleasant 72.9°F (22.7°C) to a moderately hot 80.6°F (27°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Marietta, Indiana, with an average temperature ranging between max 83.1°F (28.4°C) and min 65.3°F (18.5°C). July is the warmest month, exhibiting average temperatures of 83.1°F (28.4°C) at the peak and 65.3°F (18.5°C) at the base. The heat index value for July is appraised at a hot 91.4°F (33°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Marietta, Indiana, with an average temperature varying between 63.1°F (17.3°C) and 82°F (27.8°C). As July transitions into August, Marietta records an average high-temperature of a still moderately hot 82°F (27.8°C), showing a gentle shift from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Marietta, is still a warm month, with an average temperature varying between 76.5°F (24.7°C) and 58.1°F (14.5°C). As September commences, the average high-temperature subtly reduces, transitioning from a moderately hot 82°F (27.8°C) in August to a still warm 76.5°F (24.7°C). Weather in September »

Weather in October

October, like September, in Marietta, Indiana, is another enjoyable autumn month, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 47.3°F (8.5°C). A shift in the average high-temperature occurs in October, reducing from a warm 76.5°F (24.7°C) in September to a refreshing 64.4°F (18°C). Weather in October »

Weather in November

November, the last month of the autumn in Marietta, is another cool month, with an average temperature fluctuating between 50.7°F (10.4°C) and 36.5°F (2.5°C). Marietta's November weather features a mild decline in high-temperatures, reducing from a comfortable 64.4°F (18°C) in October to a fresh 50.7°F (10.4°C). Weather in November »

Weather in December

December, the first month of the winter in Marietta, is also a wintry month, with an average temperature fluctuating between 29.3°F (-1.5°C) and 40.1°F (4.5°C). Marietta's December weather comes with a decrease in average high-temperatures, moving from a fresh 50.7°F (10.4°C) in November to a cold 40.1°F (4.5°C). Weather in December »
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Frequently asked questions

What is the coldest month in Marietta?

January brings the lowest temperatures in Marietta, Indiana, with an average high of 35.1°F (1.7°C) and an average low of 22.5°F (-5.3°C).

How much does it rain in Marietta?

Throughout the year, in Marietta, Indiana, there are 149.3 rainfall days, and 25.83" (656mm) of precipitation is accumulated.

When does it snow in Marietta?

January through April, October through December are months with snowfall in Marietta.

What is the snowiest month in Marietta?

January is the month with the most snowfall in Marietta, Indiana. Snow falls for 8 days and accumulates 2.4" (61mm) of snow.

How many days does it snow in Marietta?

In Marietta, during the entire year, snow falls for 28.6 days and aggregates up to 8.15" (207mm) of snow.

What is the month with the least sunshine in Marietta?

With an average of 4.1h of sunshine, January has the least sunshine of the year in Marietta.

What is the month with the lowest UV index in Marietta?

The months with the lowest UV index in Marietta are January, February, October through December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Marietta?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in Marietta?

The month with the most rainfall is May, when the rain falls for 17.6 days and typically aggregates up to 3.19" (81mm) of precipitation.

When it does not snow in Marietta?

In Marietta, snow does not fall in May through September.

When are the longest days in Marietta?

With an average of 14h and 54min of daylight, June has the longest days of the year in Marietta, Indiana.

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

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

What is the hottest time of year in Marietta?

Marietta, Indiana, notes the warmest temperatures in July, with a average high of 83.1°F (28.4°C) and a low of 65.3°F (18.5°C).

What month has the most sunshine in Marietta?

July has the most sunshine of the year in Marietta, Indiana, with an average of 10.2h of sunshine.

What is the driest month in Marietta?

The month with the least rainfall in Marietta is September, when the rain falls for 12.3 days and typically collects 1.57" (40mm) of precipitation.

What is the least humid month in Marietta?

October is the least humid month in Marietta, Indiana, with an average relative humidity of 74%.

What is the most humid month in Marietta?

December is the most humid month, with an average relative humidity of 82%.

What is the month with the shortest days in Marietta?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Marietta, Indiana.

Average temperature
Marietta, IN

Average temperature - Marietta, IN

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.1°F).

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure
Marietta, IN

Average pressure - Marietta, IN

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Marietta, IN

Average wind speed - Marietta, IN

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average rainfall
Marietta, IN

Average rainfall - Marietta, IN

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days
Marietta, IN

Average rainfall days - Marietta, IN

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (7.8 days).

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Average snowfall
Marietta, IN

Average snowfall - Marietta, IN

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Marietta, IN

Average snowfall days - Marietta, IN

The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Marietta, IN

Average daylight / Average sunshine - Marietta, IN

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days
Marietta, IN

Average sunshine days - Marietta, IN

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index
Marietta, IN

Average UV index - Marietta, IN

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average visibility
Marietta, IN

Average visibility - Marietta, IN

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

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Marietta, Indiana, USA

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