Hartford
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Hartford, CT

Skyscape view of the city of Hartford, Connecticut, with the roads leading to the town, and trees on roadsides
Skyscape view of the city of Hartford, Connecticut, with the roads leading to the town, and trees on roadsides
The last month of the spring, May, is a pleasant month in Hartford, Connecticut, with average temperature varying between 71.2°F (21.8°C) and 47.7°F (8.7°C).

Temperature

In May, the average high-temperature rises, from a moderate 60.4°F (15.8°C) in April, to a pleasant 71.2°F (21.8°C). In Hartford, the average low-temperature is 47.7°F (8.7°C).

Humidity

In Hartford, the average relative humidity is 63%.

Rainfall

In Hartford, during May, the rain falls for 12.8 days and regularly aggregates up to 4.4" (110.5mm) of precipitation. In Hartford, during the entire year, the rain falls for 130 days and collects up to 45.9" (1164.6mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

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

Sunshine

In Hartford, the average sunshine in May is 8.3h.

UV index

In May, the average daily maximum UV index in Hartford is 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.

What is the temperature in May in Hartford?

In May, in Hartford, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 47.7°F (8.7°C).

What is the average humidity in May in Hartford?

The average relative humidity in May in Hartford is 63%.

How many days does it rain in May in Hartford?

In Hartford, Connecticut, in May, it is raining for 12.8 days, with typically 4.4" (110.5mm) of accumulated precipitation.

Does it snow in Hartford in May?

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

When it does not snow in Hartford?

In Hartford snow does not fall in May through October.

How many hours of daylight does Hartford have in May?

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

How many hours of sunshine does Hartford have in May?

The average sunshine in May in Hartford, Connecticut, is 8.3h.

What is the UV index intensity in May in Hartford?

In Hartford, Connecticut, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.
Average temperature in May - Hartford, CT
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (84.5°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (62.7°F).
The coldest month (with the lowest average low temperature) is January (17.7°F).

Average humidity in May - Hartford, CT
  • Average humidity in May: 63%

The month with the highest relative humidity is September (72.9%).
The month with the lowest relative humidity is April (58%).

Average rainfall in May - Hartford, CT
  • Average rainfall in May: 4.4"

Wettest months (with the highest rainfall) are May, June and October (4.4").
The driest month (with the lowest rainfall) is February (2.9").

Average rainfall days in May - Hartford, CT
  • Average rainfall days in May: 12.8 days

The month with the highest number of rainy days is May (12.8 days).
The month with the lowest number of rainy days is February (9.7 days).

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

The month with the highest snowfall is January (12.3").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in May - Hartford, CT
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (5.8 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

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 shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.3h

The month with most sunshine is July (Average sunshine: 9.5h).
The month with least sunshine is December (Average sunshine: 4.5h).

Average UV index in May - Hartford, CT
  • Average UV index in May: 7

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).