May weather forecast
Marlborough, CT

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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).

Temperature

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). In Marlborough, the expected average low-temperature for May is a frosty 49.6°F (9.8°C).

Humidity

In Marlborough, the average relative humidity in May is 76%.

Rainfall

In Marlborough, during May, the rain falls for 10 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Marlborough, during the entire year, the rain falls for 99.9 days and collects up to 9.41" (239mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Marlborough aggregates 0.2" (5mm) of snow. In Marlborough, during the entire year, snow falls for 22.3 days and aggregates up to 3.82" (97mm) of snow.

Daylight

In Marlborough, the average length of the day in May is 14h and 33min.
On the first day of the month, sunrise is at 5:45 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:17 am and sunset at 8:17 pm EDT.

Sunshine

In May, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in May in Marlborough is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Preventing sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the average May temperature in Marlborough?

In Marlborough, 67.6°F (19.8°C) is the average high-temperature and 49.6°F (9.8°C) is the average low-temperature during May.

What is the average humidity in May in Marlborough?

In Marlborough, the average relative humidity in May is 76%.

How much does it rain in Marlborough in May?

In Marlborough, Connecticut, in May, it is raining for 10 days, with typically 0.75" (19mm) of accumulated precipitation.

What is the last month it snows in Marlborough?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Marlborough aggregates 0.2" (5mm) of snow.

What is the average length of the day in May in Marlborough?

In Marlborough, the average day length in May is 14h and 33min.

When is the sunrise / sunset in May in Marlborough?

On the first day of May in Marlborough, Connecticut, sunrise is at 5:45 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:17 pm EDT.

How long on average sun shines in May in Marlborough?

In Marlborough, the average sunshine duration in May is 8.1h.

What is the UV index reading in May in Marlborough?

In Marlborough, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Marlborough, CT

Average temperature in May - Marlborough, CT
  • Average high temperature in May: 67.6°F

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).

  • Average low temperature in May: 49.6°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 in May
Marlborough, CT

Average pressure in May - Marlborough, CT
  • Average pressure in May: 30.01"Hg

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 in May
Marlborough, CT

Average wind speed in May - Marlborough, CT
  • Average wind speed in May: 6.8mph

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 humidity in May
Marlborough, CT

Average humidity in May - Marlborough, CT
  • Average humidity in May: 76%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in May
Marlborough, CT

Average rainfall in May - Marlborough, CT
  • Average rainfall in May: 0.75"

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 in May
Marlborough, CT

Average rainfall days in May - Marlborough, CT
  • Average rainfall days in May: 10 days

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 in May
Marlborough, CT

Average snowfall in May - Marlborough, CT
  • Average snowfall in May: 0.2"

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 in May
Marlborough, CT

Average snowfall days in May - Marlborough, CT
  • Average snowfall days in May: 0.1 days

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 in May /
Average sunshine in May
Marlborough, CT

Average daylight in May / Average sunshine in May - Marlborough, CT
  • Average daylight in May: 14h and 3min

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).

  • Average sunshine in May: 8h and 1min

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 in May
Marlborough, CT

Average sunshine days in May - Marlborough, CT
  • Average sunshine days in May: 18.8 days

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 UV index in May
Marlborough, CT

Average UV index in May - Marlborough, CT
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Marlborough, CT

Average cloud cover in May - Marlborough, CT
  • Average cloud cover in May: 49

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in May
Marlborough, CT

Average visibility in May - Marlborough, CT
  • Average visibility in May: 5mi

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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