May weather forecast
New Canaan, CT

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Weather in May

The last month of the spring, May, is a comfortable month in New Canaan, Connecticut, with an average temperature varying between 51.8°F (11°C) and 66°F (18.9°C).

Temperature

With the transition into May, New Canaan experiences an increase in average high-temperatures, moving up from a fresh 55.2°F (12.9°C) in April to an enjoyable 66°F (18.9°C). During May, the nighttime temperature in New Canaan, Connecticut, averages of 51.8°F (11°C).

Humidity

February, May, June, October and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In New Canaan, in May, during 17.5 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In New Canaan, during the entire year, the rain falls for 170.2 days and collects up to 38.62" (981mm) of precipitation.

Snowfall

In New Canaan, snow does not fall in May through October.

Daylight

In May, the average length of the day in New Canaan is 14h and 31min.
On the first day of May in New Canaan, sunrise is at 5:50 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:19 pm EDT.

Sunshine

In May, the average sunshine is 8.7h.

UV index

In May, the average daily maximum UV index in New Canaan is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What are May temperatures in New Canaan?

May temperatures in New Canaan vary between a high-temperature of 66°F (18.9°C) and a low-temperature of 51.8°F (11°C).

What is the most humid month in New Canaan?

The months with the highest humidity are February, May, June, October and December, with an average relative humidity of 76%.

What is the average humidity in May in New Canaan?

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

How many days does it rain in May in New Canaan?

In New Canaan, in May, it is raining for 17.5 days, with typically 3.23" (82mm) of accumulated precipitation.

When it does not snow in New Canaan?

In New Canaan, snow does not fall in May through October.

Does it snow in New Canaan in May?

In May, in New Canaan, Connecticut, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in New Canaan?

In May, the average day length in New Canaan, Connecticut, is 14h and 31min.

When are sunrise and sunset in May in New Canaan?

On the first day of May, sunrise is at 5:50 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:19 pm EDT.

How many hours of sunshine does New Canaan have in May?

The average sunshine duration in May in New Canaan, Connecticut, is 8.7h.

What is the UV index reading in May in New Canaan?

In New Canaan, Connecticut, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from 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
New Canaan, CT

Average temperature in May - New Canaan, CT
  • Average high temperature in May: 66°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in May: 51.8°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in May
New Canaan, CT

Average pressure in May - New Canaan, 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
New Canaan, CT

Average wind speed in May - New Canaan, CT
  • Average wind speed in May: 7.1mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity in May
New Canaan, CT

Average humidity in May - New Canaan, CT
  • Average humidity in May: 76%

The months with the highest relative humidity are February, May, June, October and December (76%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in May
New Canaan, CT

Average rainfall in May - New Canaan, CT
  • Average rainfall in May: 3.23"

The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is January (2.44").

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Average rainfall days in May
New Canaan, CT

Average rainfall days in May - New Canaan, CT
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in May
New Canaan, CT

Average snowfall in May - New Canaan, CT
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
New Canaan, CT

Average snowfall days in May - New Canaan, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (8.3 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
New Canaan, CT

Average daylight in May / Average sunshine in May - New Canaan, 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 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
New Canaan, CT

Average sunshine days in May - New Canaan, CT
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in May
New Canaan, CT

Average UV index in May - New Canaan, 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
New Canaan, CT

Average cloud cover in May - New Canaan, CT
  • Average cloud cover in May: 44

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in May
New Canaan, CT

Average visibility in May - New Canaan, 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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New Canaan, Connecticut, USA

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