May weather forecast
Hartford, CT

The city of Hartford, Connecticut with the roads leading to the town, and trees on roadsides
The city of Hartford, Connecticut with the roads leading to the town, and trees on roadsides

Weather in May

The last month of the spring, May, is a pleasant month in Hartford, Connecticut, with temperature in the range of an average high of 68.7°F (20.4°C) and an average low of 49.5°F (9.7°C).

Temperature

In Hartford, the average high-temperature in May rises from a mild 56.5°F (13.6°C) in April to a pleasant 68.7°F (20.4°C). In Hartford, Connecticut, in May, the average low-temperature is 49.5°F (9.7°C).

Humidity

The average relative humidity in May in Hartford is 74%.

Rainfall

In Hartford, in May, during 10.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, in Hartford, there are 113.2 rainfall days, and 10.24" (260mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in Hartford. During 0.2 snowfall days, Hartford aggregates 0.04" (1mm) of snow. Throughout the year, there are 21.5 snowfall days, and 4.45" (113mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 34min.
On the first day of May in Hartford, sunrise is at 5:47 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:18 pm EDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Hartford?

The average high-temperature, in May, in Hartford, Connecticut, is 68.7°F (20.4°C), while the average low-temperature is 49.5°F (9.7°C).

What is the average humidity in May in Hartford?

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

How many days does it rain in May in Hartford?

In Hartford, in May, it is raining for 10.8 days, with typically 0.91" (23mm) of accumulated precipitation.

What is the last month it snows in Hartford?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Hartford aggregates 0.04" (1mm) of snow.

How many hours of daylight does Hartford have in May?

The average day length in May in Hartford, Connecticut, is 14h and 34min.

When is the sunrise / sunset in May in Hartford?

On the first day of May in Hartford, sunrise is at 5:47 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:18 pm EDT.

How many hours of sunshine does Hartford have in May?

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

How high is the UV index in May in Hartford?

The average daily maximum UV index in May 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
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Hartford, CT

Average temperature in May - Hartford, CT
  • Average high temperature in May: 68.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in May: 49.5°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in May
Hartford, CT

Average pressure in May - Hartford, 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
Hartford, CT

Average wind speed in May - Hartford, 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 months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in May
Hartford, CT

Average humidity in May - Hartford, CT
  • Average humidity in May: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in May
Hartford, CT

Average rainfall in May - Hartford, CT
  • Average rainfall in May: 0.91"

The wettest months (with the highest rainfall) are June and July (1.06").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in May
Hartford, CT

Average rainfall days in May - Hartford, CT
  • Average rainfall days in May: 10.8 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in May
Hartford, CT

Average snowfall in May - Hartford, CT
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Hartford, CT

Average snowfall days in May - Hartford, CT
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (5.7 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
Hartford, CT

Average daylight in May / Average sunshine in May - Hartford, 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 13min).

  • 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).

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Average sunshine days in May
Hartford, CT

Average sunshine days in May - Hartford, CT
  • Average sunshine days in May: 16.9 days

The months with the most sunshine days are January and November (20.4 days).
The month with the least sunshine days is June (16.3 days).

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Average UV index in May
Hartford, CT

Average UV index in May - Hartford, 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
Hartford, CT

Average cloud cover in May - Hartford, 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
Hartford, CT

Average visibility in May - Hartford, CT
  • Average visibility in May: 5mi

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

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