May weather forecast and climate
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 an agreeable month in Hartford, Connecticut, with average temperature fluctuating between 49.5°F (9.7°C) and 68.7°F (20.4°C).

Temperature

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

Humidity

In May, the average relative humidity 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

Months with snowfall are January through May, November and December. May is the last month it regularly snows. 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

In Hartford, Connecticut, the average length of the day is 14.6h.

Sunshine

In Hartford, the average sunshine in May is 8.5h.

UV index

The average daily maximum UV index in Hartford is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for 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. 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?

In Hartford, Connecticut, in May, the average high-temperature is 68.7°F (20.4°C), and 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 is 74%.

How many days does it rain in May in Hartford?

In May, in Hartford, Connecticut, the rain falls for 10.8 days. Throughout May, 0.91" (23mm) of precipitation is accumulated.

What is the last month it snows in Hartford?

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

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

The average length of the day in May in Hartford, Connecticut, is 14.6h.

How many hours of sunshine does Hartford have in May?

In Hartford, Connecticut, the average sunshine in May is 8.5h.

What is the UV index intensity in May in Hartford?

In Hartford, Connecticut, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

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"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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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").
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).
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: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.5h

Months with the most sunshine are July and August (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
Hartford, CT

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

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

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
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

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

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