Climate and monthly weather forecast
Marietta, OH

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Weather in January

January, the same as December, is a wintry winter month in Marietta, Ohio, with an average temperature ranging between min 22.8°F (-5.1°C) and max 36.1°F (2.3°C). Marietta notes the coldest temperatures in January, with a high average of 36.1°F (2.3°C) and a low of 22.8°F (-5.1°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Marietta, Ohio, with temperature in the range of an average high of 40.6°F (4.8°C) and an average low of 26.1°F (-3.3°C). As Marietta, Ohio, welcomes February, the average high-temperature stabilizes at a still cold 40.6°F (4.8°C), showing little deviation from January's 36.1°F (2.3°C). Weather in February »

Weather in March

March, the first month of the spring in Marietta, is a fresh month, with an average temperature ranging between min 34.2°F (1.2°C) and max 51.1°F (10.6°C). The beginning of March marks a shift in the average high-temperature, moving from February's cold 40.6°F (4.8°C) to a fresh 51.1°F (10.6°C). Weather in March »

Weather in April

April is a refreshing spring month in Marietta, Ohio, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 63.3°F (17.4°C). With the arrival of April, the average high-temperature transitions from a fresh 51.1°F (10.6°C) in March to a refreshing 63.3°F (17.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Marietta, Ohio, with an average temperature varying between 53.2°F (11.8°C) and 74.1°F (23.4°C). As May arrives, a rise in the average high-temperature is observed, moving from a comfortable 63.3°F (17.4°C) in April to a warm 74.1°F (23.4°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Marietta, Ohio, with an average temperature varying between 81.1°F (27.3°C) and 59.7°F (15.4°C). June marks a minor ascent in the average high-temperature, adjusting from May's 74.1°F (23.4°C) to a still warm 81.1°F (27.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Marietta, Ohio, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 85.6°F (29.8°C). The warmest time of the year is July, with temperatures averaging a high of 85.6°F (29.8°C) and a low of 63.1°F (17.3°C). For most parts of July, the heat index is appraised at a fiery hot 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Marietta, Ohio, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 84.2°F (29°C). Marietta, Ohio, records an average high-temperature of a still warm 84.2°F (29°C) in August, maintaining a close correlation with July's 85.6°F (29.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Marietta, Ohio, with an average temperature varying between 56.7°F (13.7°C) and 77.9°F (25.5°C). The onset of September brings a small shift in high-temperatures, falling from a moderately hot 84.2°F (29°C) in August to a still warm 77.9°F (25.5°C). Weather in September »

Weather in October

October, like September, in Marietta, Ohio, is another enjoyable autumn month, with an average temperature ranging between min 46°F (7.8°C) and max 64.4°F (18°C). The arrival of October indicates a decrease in the average high-temperature, moving from a moderately hot 77.9°F (25.5°C) in September to a comfortable 64.4°F (18°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Marietta, Ohio, with an average temperature ranging between max 51.1°F (10.6°C) and min 35.6°F (2°C). Setting in of November comes with a decrease in the average high-temperature, moving from an enjoyable 64.4°F (18°C) in October to a cool 51.1°F (10.6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Marietta, Ohio, with temperature in the range of an average low of 30.4°F (-0.9°C) and an average high of 41.7°F (5.4°C). In Marietta, the average high-temperature in December decreases from a fresh 51.1°F (10.6°C) in November to a cold 41.7°F (5.4°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Marietta?

Temperature records in Marietta mark January as the coldest month, with highs averaging 36.1°F (2.3°C) and lows at 22.8°F (-5.1°C).

What is the most humid month in Marietta?

January and February, with an average relative humidity of 83%, are most humid months.

How many days does it rain in Marietta?

Throughout the year, in Marietta, there are 156.1 rainfall days, and 24.8" (630mm) of precipitation is accumulated.

When does it snow in Marietta?

Months with snowfall are January through April, October through December.

How many days does it snow in Marietta?

Throughout the year, in Marietta, there are 31.3 snowfall days, and 9.37" (238mm) of snow is accumulated.

What is the month with the least sunshine in Marietta?

The month with the least sunshine in Marietta is January, with an average of 3.4h of sunshine.

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

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

When does it snow the most in Marietta?

February is the month with the most snowfall. Snow falls for 8.6 days and accumulates 2.8" (71mm) of snow.

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 rainiest month in Marietta?

May is the month with the most rainfall in Marietta, Ohio. Rain falls for 18.3 days and accumulates 3.19" (81mm) of precipitation.

When it does not snow in Marietta?

May through September are months without snowfall.

What is the least humid month in Marietta?

The months with the lowest humidity in Marietta are June through August, with an average relative humidity of 76%.

When are the longest days in Marietta?

The month with the longest days in Marietta is June, with an average of 14h and 54min of daylight.

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

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

What is the hottest time of year in Marietta?

July, with average temperatures reaching a high of 85.6°F (29.8°C) and a low of 63.1°F (17.3°C), is the warmest month in Marietta.

What month has the most sunshine in Marietta?

With an average of 10.1h of sunshine, August has the most sunshine of the year.

What is the driest month in Marietta?

September is the month with the least rainfall in Marietta, Ohio. Rain falls for 12.5 days and accumulates 1.46" (37mm) of precipitation.

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, Ohio.

Average temperature
Marietta, OH

Average temperature - Marietta, OH

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure
Marietta, OH

Average pressure - Marietta, OH

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed
Marietta, OH

Average wind speed - Marietta, OH

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity
Marietta, OH

Average humidity - Marietta, OH

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).

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Average rainfall
Marietta, OH

Average rainfall - Marietta, OH

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").

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Average rainfall days
Marietta, OH

Average rainfall days - Marietta, OH

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall
Marietta, OH

Average snowfall - Marietta, OH

The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Marietta, OH

Average snowfall days - Marietta, OH

The month with the highest number of snowfall days is January (9.5 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, OH

Average daylight / Average sunshine - Marietta, OH

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 August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days
Marietta, OH

Average sunshine days - Marietta, OH

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index
Marietta, OH

Average UV index - Marietta, OH

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, November and December (UV index 2).

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Average visibility
Marietta, OH

Average visibility - Marietta, OH

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

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Marietta, Ohio, USA

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