May weather forecast
Groton, VT

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Weather in May

May, the last month of the spring in Groton, is a comfortable month, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 63.7°F (17.6°C).

Temperature

In Groton, the average high-temperature in May soars, from a frosty 47.5°F (8.6°C) in April, to a comfortable 63.7°F (17.6°C). A striking difference from the daytime highs is registered during May nights, with an average temperature of 42.1°F (5.6°C).

Humidity

The least humid month in Groton is May, with an average relative humidity of 76%.

Rainfall

In May, in Groton, Vermont, the rain falls for 16.8 days. Throughout May, 2.56" (65mm) of precipitation is accumulated. In Groton, Vermont, during the entire year, the rain falls for 157.2 days and collects up to 28.35" (720mm) of precipitation.

Snowfall

Months with snowfall in Groton, Vermont, are January through May, October through December. May is the last month it regularly snows. During 0.7 snowfall days, in May, Groton aggregates 0.63" (16mm) of snow. Throughout the year, in Groton, there are 98.4 snowfall days, and 51.97" (1320mm) of snow is accumulated.

Daylight

In Groton, the average length of the day in May is 14h and 47min.
On the first day of May in Groton, sunrise is at 5:38 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:25 pm EDT.

Sunshine

In Groton, the average sunshine in May is 8h.

UV index

In May, the average daily maximum UV index in Groton is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 4 in May translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What is the temperature in May in Groton?

In May, in Groton, the average high-temperature is 63.7°F (17.6°C), and the average low-temperature is 42.1°F (5.6°C).

What is the least humid month in Groton?

With an average relative humidity of 76%, May is the least humid month in Groton.

What is the average humidity in May in Groton?

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

How many days does it rain in May in Groton?

In Groton, in May, during 16.8 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

What is the last month it snows in Groton?

May is the last month it regularly snows. During 0.7 snowfall days, in May, Groton aggregates 0.63" (16mm) of snow.

How many hours of daylight does Groton have in May?

The average day length in May in Groton is 14h and 47min.

When is the sunrise / sunset in May in Groton?

In May, on the first day of the month, sunrise is at 5:38 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:25 pm EDT.

How long on average sun shines in May in Groton?

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

What is the UV index reading in May in Groton?

In Groton, Vermont, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Groton, VT

Average temperature in May - Groton, VT
  • Average high temperature in May: 63.7°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in May: 42.1°F

The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in May
Groton, VT

Average pressure in May - Groton, VT
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Groton, VT

Average wind speed in May - Groton, VT
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
Groton, VT

Average humidity in May - Groton, VT
  • Average humidity in May: 76%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in May
Groton, VT

Average rainfall in May - Groton, VT
  • Average rainfall in May: 2.56"

The wettest months (with the highest rainfall) are June and October (2.87").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in May
Groton, VT

Average rainfall days in May - Groton, VT
  • Average rainfall days in May: 16.8 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in May
Groton, VT

Average snowfall in May - Groton, VT
  • Average snowfall in May: 0.63"

The month with the highest snowfall is January (12.44").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Groton, VT

Average snowfall days in May - Groton, VT
  • Average snowfall days in May: 0.7 days

The month with the highest number of snowfall days is February (20.8 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
Groton, VT

Average daylight in May / Average sunshine in May - Groton, VT
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 0min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in May
Groton, VT

Average sunshine days in May - Groton, VT
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (6.6 days).

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Average UV index in May
Groton, VT

Average UV index in May - Groton, VT
  • Average UV index in May: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in May
Groton, VT

Average cloud cover in May - Groton, VT
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 39).

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Average visibility in May
Groton, VT

Average visibility in May - Groton, VT
  • Average visibility in May: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Groton, Vermont, USA

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