May weather forecast and climate
Darien, CT

Weather in May

The last month of the spring, May, is an enjoyable month in Darien, Connecticut, with average temperature varying between 53.1°F (11.7°C) and 65.8°F (18.8°C).

Temperature

In Darien, the average high-temperature increases, from a mild 55.4°F (13°C) in April, to an enjoyable 65.8°F (18.8°C). The average low-temperature, in Darien, is 53.1°F (11.7°C).

Humidity

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

Rainfall

In Darien, Connecticut, it is raining for 17.3 days, with typically 3.19" (81mm) of accumulated precipitation. In Darien, during the entire year, the rain falls for 166.4 days and collects up to 38.7" (983mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in May is 14.5h.

Sunshine

In Darien, the average sunshine in May is 8.6h.

UV index

The average daily maximum UV index in Darien, Connecticut, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Darien?

The average high-temperature, in May, is 65.8°F (18.8°C), while the average low-temperature is 53.1°F (11.7°C).

What is the most humid month in Darien?

The most humid month in Darien, Connecticut, is May, with an average relative humidity of 76%.

What is the average humidity in May in Darien?

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

How much does it rain in Darien in May?

In Darien, in May, during 17.3 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.

Does it snow in Darien in May?

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

When it does not snow in Darien?

In Darien, Connecticut, snow does not fall in May through October.

What is the average length of the day in May in Darien?

The average length of the day in May is 14.5h.

How long on average sun shines in May in Darien?

In Darien, Connecticut, the average sunshine in May is 8.6h.

What is the UV index reading in May in Darien?

In May, the average daily maximum UV index in Darien is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in May
Darien, CT

Average temperature in May - Darien, CT
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in May: 53.1°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

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Average pressure in May
Darien, CT

Average pressure in May - Darien, CT
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in May
Darien, CT

Average wind speed in May - Darien, CT
  • Average wind speed in May: 7.6mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in May
Darien, CT

Average humidity in May - Darien, CT
  • Average humidity in May: 76%

The month with the highest relative humidity is May (76%).
Months with the lowest relative humidity are April, August and November (72%).

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Average rainfall in May
Darien, CT

Average rainfall in May - Darien, CT
  • Average rainfall in May: 3.19"

The wettest months (with the highest rainfall) are July and December (4.17").
The driest month (with the least rainfall) is January (2.48").

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Average rainfall days in May
Darien, CT

Average rainfall days in May - Darien, CT
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in May
Darien, CT

Average snowfall in May - Darien, CT
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.64").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Darien, CT

Average snowfall days in May - Darien, CT
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (7.8 days).
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
Darien, CT

Average daylight in May / Average sunshine in May - Darien, CT
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in May
Darien, CT

Average sunshine days in May - Darien, CT
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in May
Darien, CT

Average UV index in May - Darien, CT
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (UV index 6).
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
Darien, CT

Average cloud cover in May - Darien, CT
  • Average cloud cover in May: 45

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

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Average visibility in May
Darien, CT

Average visibility in May - Darien, CT
  • Average visibility in May: 6mi

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

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