May weather forecast
Old Mystic, CT

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Weather in May

May, the last month of the spring in Old Mystic, is an enjoyable month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 50.2°F (10.1°C).

Temperature

Old Mystic in May shows a temperature shift, moving from an average high of a fresh 54.5°F (12.5°C) in April to a refreshing 64.9°F (18.3°C). During May, the average low-temperature in Old Mystic is a fresh 50.2°F (10.1°C).

Humidity

In Old Mystic, the average relative humidity in May is 78%.

Rainfall

In Old Mystic, Connecticut, in May, it is raining for 16.2 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 162.1 rainfall days, and 33.66" (855mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Old Mystic, Connecticut, are January through May, November and December. May is the last month it regularly snows in Old Mystic. During 0.2 snowfall days, in May, Old Mystic aggregates 0.08" (2mm) of snow. Throughout the year, in Old Mystic, there are 26.7 snowfall days, and 9.72" (247mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 32min.
On the first day of May in Old Mystic, sunrise is at 5:43 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:14 pm EDT.

Sunshine

The average sunshine in May in Old Mystic is 8.3h.

UV index

The average daily maximum UV index in May in Old Mystic is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What is the usual temperature for Old Mystic in May?

The average high-temperature and low-temperature in Old Mystic during May are 64.9°F (18.3°C) and 50.2°F (10.1°C) respectively.

What is the average humidity in May in Old Mystic?

The average relative humidity in May in Old Mystic is 78%.

How much does it rain in Old Mystic in May?

In Old Mystic, Connecticut, during May, the rain falls for 16.2 days and regularly aggregates up to 2.56" (65mm) of precipitation.

What is the last month it snows in Old Mystic?

May is the last month it regularly snows in Old Mystic. During 0.2 snowfall days, in May, Old Mystic aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Old Mystic?

The average day length in May in Old Mystic is 14h and 32min.

When is the sunrise / sunset in May in Old Mystic?

On the first day of May, sunrise is at 5:43 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:14 pm EDT.

How many hours of sunshine does Old Mystic have in May?

In Old Mystic, the average sunshine duration in May is 8.3h.

What is the UV index intensity in May in Old Mystic?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Old Mystic, CT

Average temperature in May - Old Mystic, CT
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in May: 50.2°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in May
Old Mystic, CT

Average pressure in May - Old Mystic, 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
Old Mystic, CT

Average wind speed in May - Old Mystic, CT
  • Average wind speed in May: 8.3mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

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Average humidity in May
Old Mystic, CT

Average humidity in May - Old Mystic, CT
  • Average humidity in May: 78%

The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in May
Old Mystic, CT

Average rainfall in May - Old Mystic, CT
  • Average rainfall in May: 2.56"

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in May
Old Mystic, CT

Average rainfall days in May - Old Mystic, CT
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (10 days).

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Average snowfall in May
Old Mystic, CT

Average snowfall in May - Old Mystic, CT
  • Average snowfall in May: 0.08"

The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Old Mystic, CT

Average snowfall days in May - Old Mystic, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (7 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
Old Mystic, CT

Average daylight in May / Average sunshine in May - Old Mystic, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in May
Old Mystic, CT

Average sunshine days in May - Old Mystic, CT
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is July (11.5 days).

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Average UV index in May
Old Mystic, CT

Average UV index in May - Old Mystic, 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
Old Mystic, CT

Average cloud cover in May - Old Mystic, CT
  • Average cloud cover in May: 46

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in May
Old Mystic, CT

Average visibility in May - Old Mystic, CT
  • Average visibility in May: 6mi

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

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Old Mystic, Connecticut, USA

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