Climate and monthly weather forecast
Marlborough, CT

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Weather in January

January, like December, in Marlborough, Connecticut, is a wintry winter month, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 34.3°F (1.3°C). January is Marlborough's coldest month, registering average high temperatures of 34.3°F (1.3°C) and lows of 22.8°F (-5.1°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Marlborough, Connecticut, with an average temperature fluctuating between 37°F (2.8°C) and 23.4°F (-4.8°C). February records an average high-temperature of a still cold 37°F (2.8°C), indicating a minor variation from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Marlborough, Connecticut, with temperature in the range of an average high of 44.4°F (6.9°C) and an average low of 30.4°F (-0.9°C). Marlborough's transition into March is marked by a minor temperature shift, moving from a wintry 37°F (2.8°C) in February to a chilly 44.4°F (6.9°C). Weather in March »

Weather in April

April in Marlborough, Connecticut, is a moderate spring month, with an average temperature ranging between max 56.5°F (13.6°C) and min 40.3°F (4.6°C). Marlborough's transition into April is marked by a rise in the average high-temperature, advancing from a frosty 44.4°F (6.9°C) in March to a moderate 56.5°F (13.6°C). Weather in April »

Weather in May

May, the last month of the spring in Marlborough, is a comfortable month, with an average temperature varying between 49.6°F (9.8°C) and 67.6°F (19.8°C). The onset of May brings a temperature shift, with the average high-temperature moving from a refreshing 56.5°F (13.6°C) in April to a comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Marlborough, Connecticut, with an average temperature varying between 75.7°F (24.3°C) and 57.4°F (14.1°C). A soft shift in the average high-temperature is noticeable in June, transitioning from a refreshing 67.6°F (19.8°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »

Weather in July

July, like June, in Marlborough, Connecticut, is another warm summer month, with an average temperature varying between 82.2°F (27.9°C) and 64°F (17.8°C). July is the warmest month, with an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 64°F (17.8°C). July's heat index is appraised at a hot 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Marlborough, Connecticut, with an average temperature ranging between min 63°F (17.2°C) and max 80.2°F (26.8°C). Marlborough notes an average high-temperature of a still warm 80.2°F (26.8°C) in August, hardly diverging from July. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Marlborough, Connecticut, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 56.7°F (13.7°C). The arrival of September corresponds with a light shift in temperature, down from 80.2°F (26.8°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Marlborough, Connecticut, with an average temperature fluctuating between 47.7°F (8.7°C) and 61.5°F (16.4°C). The average high-temperature decreases in October, shifting from a moderately hot 73.4°F (23°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Marlborough, is also a frosty month, with an average temperature varying between 36.9°F (2.7°C) and 49.6°F (9.8°C). With the beginning of November, the average high-temperature shows a decrease, transitioning from an enjoyable 61.5°F (16.4°C) in October to a frosty 49.6°F (9.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Marlborough, Connecticut, with an average temperature fluctuating between 40.3°F (4.6°C) and 29.7°F (-1.3°C). The arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 49.6°F (9.8°C) to a cold 40.3°F (4.6°C). Weather in December »
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Frequently asked questions

What month is the coldest in Marlborough?

January, noted for its average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 22.8°F (-5.1°C), is considered the coldest month.

How many days does it rain in Marlborough?

In Marlborough, during the entire year, the rain falls for 99.9 days and collects up to 9.41" (239mm) of precipitation.

When does it snow in Marlborough?

January through May, November and December are months with snowfall in Marlborough, Connecticut.

How many days does it snow in Marlborough?

Throughout the year, there are 22.3 snowfall days, and 3.82" (97mm) of snow is accumulated.

What is the most humid month in Marlborough?

The most humid month in Marlborough, Connecticut, is February, with an average relative humidity of 79%.

What are the months with the least sunshine in Marlborough?

The months with the least sunshine are February and December, with an average of 4.6h of sunshine.

What is the snowiest month in Marlborough?

The month with the most snowfall in Marlborough, Connecticut, is March, when snow falls for 5.3 days and typically aggregates up to 1.26" (32mm) of snow.

When is Daylight Saving Time (DST) in Marlborough?

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 least humid month in Marlborough?

April is the least humid month in Marlborough, with an average relative humidity of 71%.

When it does not snow in Marlborough?

June through October are months without snowfall.

When are the longest days in Marlborough?

The month with the longest days is June, with an average of 15h and 6min of daylight.

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

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

What is the hottest time of year in Marlborough?

Temperature records mark July as the warmest month, with highs averaging 82.2°F (27.9°C) and lows at 64°F (17.8°C).

What month has the most sunshine in Marlborough?

August has the most sunshine of the year, with an average of 10.3h of sunshine.

What is the driest month in Marlborough?

The month with the least rainfall in Marlborough, Connecticut, is September, when the rain falls for 7.5 days and typically collects 0.35" (9mm) of precipitation.

What is the wettest month in Marlborough?

December is the month with the most rainfall. Rain falls for 6.8 days and accumulates 1.02" (26mm) of precipitation.

What is the month with the shortest days in Marlborough?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

When is the lowest UV index in Marlborough?

With an average maximum UV index of 1, December is the month with the lowest UV index.

Average temperature
Marlborough, CT

Average temperature - Marlborough, CT

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure
Marlborough, CT

Average pressure - Marlborough, CT

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Marlborough, CT

Average wind speed - Marlborough, CT

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average rainfall
Marlborough, CT

Average rainfall - Marlborough, CT

The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days
Marlborough, CT

Average rainfall days - Marlborough, CT

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).

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Average snowfall
Marlborough, CT

Average snowfall - Marlborough, CT

The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Marlborough, CT

Average snowfall days - Marlborough, CT

The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Marlborough, CT

Average daylight / Average sunshine - Marlborough, CT

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days
Marlborough, CT

Average sunshine days - Marlborough, CT

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).

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Average visibility
Marlborough, CT

Average visibility - Marlborough, CT

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

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Marlborough, Connecticut, USA

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