May weather forecast
South Windsor, CT

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Weather in May

The last month of the spring, May, is a pleasant month in South Windsor, Connecticut, with temperature in the range of an average high of 68.9°F (20.5°C) and an average low of 49.5°F (9.7°C).

Temperature

A shift in the average high-temperature is noticeable in May, changing from a refreshing 56.7°F (13.7°C) in April to a pleasant 68.9°F (20.5°C). Throughout May, the nighttime temperature in South Windsor, Connecticut, averages to a frosty 49.5°F (9.7°C).

Humidity

The average relative humidity in May is 74%.

Rainfall

In South Windsor, in May, during 16.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In South Windsor, during the entire year, the rain falls for 164.8 days and collects up to 31.77" (807mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in South Windsor. During 0.1 snowfall days, in May, South Windsor aggregates 0.31" (8mm) of snow. In South Windsor, during the entire year, snow falls for 31.6 days and aggregates up to 17.13" (435mm) of snow.

Daylight

The average length of the day in May in South Windsor is 14h and 34min.
On the first day of May, sunrise is at 5:45 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:18 pm EDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

In South Windsor, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What are May temperatures in South Windsor?

The high-temperature, in May, in South Windsor, is 68.9°F (20.5°C), while the low-temperature averages to 49.5°F (9.7°C).

What is the average humidity in May in South Windsor?

The average relative humidity in May is 74%.

How many days does it rain in May in South Windsor?

In South Windsor, Connecticut, in May, it is raining for 16.5 days, with typically 2.6" (66mm) of accumulated precipitation.

What is the last month it snows in South Windsor?

May is the last month it regularly snows. During 0.1 snowfall days, in May, South Windsor aggregates 0.31" (8mm) of snow.

What is the average length of the day in May in South Windsor?

In South Windsor, Connecticut, the average day length in May is 14h and 34min.

What time are sunrise and sunset in May in South Windsor?

In May, on the first day of the month, sunrise is at 5:45 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:18 pm EDT.

How long on average sun shines in May in South Windsor?

In South Windsor, Connecticut, the average sunshine duration in May is 8.5h.

How high is the UV index in May in South Windsor?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
South Windsor, CT

Average temperature in May - South Windsor, CT
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in May: 49.5°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in May
South Windsor, CT

Average pressure in May - South Windsor, 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
South Windsor, CT

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

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in May
South Windsor, CT

Average humidity in May - South Windsor, CT
  • Average humidity in May: 74%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in May
South Windsor, CT

Average rainfall in May - South Windsor, CT
  • Average rainfall in May: 2.6"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in May
South Windsor, CT

Average rainfall days in May - South Windsor, CT
  • Average rainfall days in May: 16.5 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).

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Average snowfall in May
South Windsor, CT

Average snowfall in May - South Windsor, CT
  • Average snowfall in May: 0.31"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
South Windsor, CT

Average snowfall days in May - South Windsor, CT
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (8.5 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
South Windsor, CT

Average daylight in May / Average sunshine in May - South Windsor, 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 3min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
South Windsor, CT

Average sunshine days in May - South Windsor, CT
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in May
South Windsor, CT

Average UV index in May - South Windsor, CT
  • Average UV index in May: 5

The months with the highest UV index are June and July (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
South Windsor, CT

Average cloud cover in May - South Windsor, CT
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
South Windsor, CT

Average visibility in May - South Windsor, CT
  • Average visibility in May: 5mi

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

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South Windsor, Connecticut, USA

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