May weather forecast
Cromwell, CT

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Weather in May

The last month of the spring, May, is an agreeable month in Cromwell, Connecticut, with an average temperature varying between 68.2°F (20.1°C) and 49.8°F (9.9°C).

Temperature

Cromwell's May weather brings a rise in high-temperatures, moving from a mild 56.8°F (13.8°C) in April to an agreeable 68.2°F (20.1°C). In Cromwell, May nights cool down to an average of 49.8°F (9.9°C).

Humidity

The average relative humidity in May is 75%.

Rainfall

In Cromwell, Connecticut, during May, the rain falls for 16.8 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Cromwell, during the entire year, the rain falls for 162.2 days and collects up to 34.13" (867mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in Cromwell. During 0.2 snowfall days, in May, Cromwell aggregates 0.47" (12mm) of snow. Throughout the year, there are 29.4 snowfall days, and 14.76" (375mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 33min.
On the first day of the month, sunrise is at 5:46 am and sunset at 7:48 pm. On the last day of May, in Cromwell, sunrise is at 5:18 am and sunset at 8:17 pm EDT.

Sunshine

The average sunshine in May is 8.2h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - It is advised to guard against sun damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What is the average May temperature in Cromwell?

In May, in Cromwell, the average high-temperature is 68.2°F (20.1°C), and the average low-temperature is 49.8°F (9.9°C).

What is the average humidity in May in Cromwell?

In Cromwell, the average relative humidity in May is 75%.

How much does it rain in Cromwell in May?

In Cromwell, Connecticut, in May, during 16.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

What is the last month it snows in Cromwell?

May is the last month it regularly snows in Cromwell, Connecticut. During 0.2 snowfall days, in May, Cromwell aggregates 0.47" (12mm) of snow.

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

The average day length in May in Cromwell, Connecticut, is 14h and 33min.

When are sunrise and sunset in May in Cromwell?

On the first day of May in Cromwell, sunrise is at 5:46 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:17 pm EDT.

How many hours of sunshine does Cromwell have in May?

In May, the average sunshine duration in Cromwell, Connecticut, is 8.2h.

What is the UV index reading in May in Cromwell?

The average daily maximum UV index in May in Cromwell, Connecticut, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Cromwell, CT

Average temperature in May - Cromwell, CT
  • Average high temperature in May: 68.2°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in May: 49.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in May
Cromwell, CT

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

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Cromwell, CT

Average wind speed in May - Cromwell, CT
  • Average wind speed in May: 6.6mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in May
Cromwell, CT

Average humidity in May - Cromwell, CT
  • Average humidity in May: 75%

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
Cromwell, CT

Average rainfall in May - Cromwell, CT
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in May
Cromwell, CT

Average rainfall days in May - Cromwell, CT
  • Average rainfall days in May: 16.8 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in May
Cromwell, CT

Average snowfall in May - Cromwell, CT
  • Average snowfall in May: 0.47"

The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Cromwell, CT

Average snowfall days in May - Cromwell, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Cromwell, CT

Average daylight in May / Average sunshine in May - Cromwell, 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 months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
Cromwell, CT

Average sunshine days in May - Cromwell, CT
  • Average sunshine days in May: 12.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in May
Cromwell, CT

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

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, March, November and December (UV index 2).

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Average cloud cover in May
Cromwell, CT

Average cloud cover in May - Cromwell, CT
  • Average cloud cover in May: 48

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
Cromwell, CT

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

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

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Cromwell, Connecticut, USA

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