May weather forecast
Bolton, CT

Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out
Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out

Weather in May

The last month of the spring, May, is a pleasant month in Bolton, Connecticut, with an average temperature varying between 49.5°F (9.7°C) and 68.9°F (20.5°C).

Temperature

In May, the average high-temperature rises from a moderate 56.7°F (13.7°C) in April to an agreeable 68.9°F (20.5°C). In Bolton, the average low-temperature is 49.5°F (9.7°C).

Humidity

In May, the average relative humidity is 74%.

Rainfall

In Bolton, in May, it is raining for 16.5 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, there are 164.8 rainfall days, and 31.77" (807mm) of precipitation is accumulated.

Snowfall

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

Daylight

In May, the average length of the day in Bolton is 14h and 34min.
On the first day of the month, sunrise is at 5:45 am and sunset at 7:47 pm. On the last day of May, in Bolton, Connecticut, sunrise is at 5:17 am and sunset at 8:17 pm EDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In Bolton, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in May in Bolton?

In May, in Bolton, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 49.5°F (9.7°C).

What is the average humidity in May in Bolton?

In Bolton, Connecticut, the average relative humidity in May is 74%.

How much does it rain in Bolton in May?

In Bolton, in May, during 16.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

What is the last month it snows in Bolton?

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

How many hours of daylight does Bolton have in May?

In May, the average day length in Bolton is 14h and 34min.

When is the sunrise / sunset in May in Bolton?

On the first day of May, sunrise is at 5:45 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:17 pm EDT.

How long on average sun shines in May in Bolton?

The average sunshine duration in May in Bolton, Connecticut, is 8.5h.

What is the UV index reading in May in Bolton?

In May, the average daily maximum UV index in Bolton is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bolton, CT

Average temperature in May - Bolton, 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).

[Resources]

Average pressure in May
Bolton, CT

Average pressure in May - Bolton, 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).

[Resources]

Average wind speed in May
Bolton, CT

Average wind speed in May - Bolton, 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).

[Resources]

Average humidity in May
Bolton, CT

Average humidity in May - Bolton, 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%).

[Resources]

Average rainfall in May
Bolton, CT

Average rainfall in May - Bolton, 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").

[Resources]

Average rainfall days in May
Bolton, CT

Average rainfall days in May - Bolton, 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).

[Resources]

Average snowfall in May
Bolton, CT

Average snowfall in May - Bolton, 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").

[Resources]

Average snowfall days in May
Bolton, CT

Average snowfall days in May - Bolton, 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).

[Resources]

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

Average daylight in May / Average sunshine in May - Bolton, CT
  • Average daylight in May: 14h and 34min

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 30min

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).

[Resources]

Average sunshine days in May
Bolton, CT

Average sunshine days in May - Bolton, 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).

[Resources]

Average UV index in May
Bolton, CT

Average UV index in May - Bolton, 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).

[Resources]

Average cloud cover in May
Bolton, CT

Average cloud cover in May - Bolton, 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).

[Resources]

Average visibility in May
Bolton, CT

Average visibility in May - Bolton, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location