May weather forecast
Grantville, CT

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Weather in May

The last month of the spring, May, is a comfortable month in Grantville, Connecticut, with an average temperature ranging between min 47.3°F (8.5°C) and max 67.1°F (19.5°C).

Temperature

With the onset of May, Grantville's average high-temperature experiences a rise, moving from April's moderate 55.4°F (13°C) to a still refreshing 67.1°F (19.5°C). In the month of May, the average low-temperature usually rests at a frosty 47.3°F (8.5°C).

Humidity

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

Rainfall

In May, in Grantville, the rain falls for 16.9 days. Throughout May, 2.95" (75mm) of precipitation is accumulated. In Grantville, during the entire year, the rain falls for 157.2 days and collects up to 33.31" (846mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Grantville. During 0.2 snowfall days, in May, Grantville aggregates 0.16" (4mm) of snow. In Grantville, during the entire year, snow falls for 45.3 days and aggregates up to 25.63" (651mm) of snow.

Daylight

In Grantville, Connecticut, the average length of the day in May is 14h and 35min.
On the first day of May in Grantville, sunrise is at 5:47 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:21 pm EDT.

Sunshine

The average sunshine in May in Grantville is 8h.

UV index

The average daily maximum UV index in May in Grantville is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 5 during May leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the usual temperature for Grantville in May?

An average high-temperature, in May, in Grantville, is 67.1°F (19.5°C) and the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in May in Grantville?

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

How much does it rain in Grantville in May?

In Grantville, in May, it is raining for 16.9 days, with typically 2.95" (75mm) of accumulated precipitation.

What is the last month it snows in Grantville?

May is the last month it regularly snows in Grantville. During 0.2 snowfall days, in May, Grantville aggregates 0.16" (4mm) of snow.

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

The average day length in May in Grantville is 14h and 35min.

When is the sunrise / sunset in May in Grantville?

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 7:51 pm. On the last day of the month, in Grantville, sunrise is at 5:19 am and sunset at 8:21 pm EDT.

How many hours of sunshine does Grantville have in May?

In May, the average sunshine duration in Grantville is 8h.

What is the UV index intensity in May in Grantville?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Grantville, CT

Average temperature in May - Grantville, CT
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in May: 47.3°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in May
Grantville, CT

Average pressure in May - Grantville, 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
Grantville, CT

Average wind speed in May - Grantville, CT
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in May
Grantville, CT

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

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in May
Grantville, CT

Average rainfall in May - Grantville, CT
  • Average rainfall in May: 2.95"

The wettest months (with the highest rainfall) are October and December (3.31").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in May
Grantville, CT

Average rainfall days in May - Grantville, CT
  • Average rainfall days in May: 16.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (7.1 days).

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Average snowfall in May
Grantville, CT

Average snowfall in May - Grantville, CT
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Grantville, CT

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

The month with the highest number of snowfall days is February (11.3 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
Grantville, CT

Average daylight in May / Average sunshine in May - Grantville, CT
  • Average daylight in May: 14h and 4min

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

  • Average sunshine in May: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in May
Grantville, CT

Average sunshine days in May - Grantville, CT
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index in May
Grantville, CT

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

The month with the highest UV index is June (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
Grantville, CT

Average cloud cover in May - Grantville, CT
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in May
Grantville, CT

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

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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Grantville, Connecticut, USA

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