May weather forecast and climate
Attleboro, MA

Weather in May

The last month of the spring, May, is an enjoyable month in Attleboro, Massachusetts, with average temperature varying between 49.6°F (9.8°C) and 66.7°F (19.3°C).

Temperature

In Attleboro, the average high-temperature in May rises, from a mild 55.9°F (13.3°C) in April, to a comfortable 66.7°F (19.3°C). The average low-temperature, in Attleboro, is 49.6°F (9.8°C).

Humidity

The average relative humidity in Attleboro is 75%.

Rainfall

In May, in Attleboro, Massachusetts, the rain falls for 15.8 days. Throughout May, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Attleboro, Massachusetts, there are 149.9 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in Attleboro. During 0.1 snowfall days, Attleboro aggregates 0.28" (7mm) of snow. Throughout the year, in Attleboro, there are 29.8 snowfall days, and 14.13" (359mm) of snow is accumulated.

Daylight

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

Sunshine

The average sunshine in Attleboro is 8.3h.

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 unsafe exposure to the UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 Attleboro?

In Attleboro, Massachusetts, in May, the average high-temperature is 66.7°F (19.3°C), and the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in May in Attleboro?

In May, the average relative humidity in Attleboro is 75%.

How many days does it rain in May in Attleboro?

In Attleboro, in May, it is raining for 15.8 days, with typically 2.17" (55mm) of accumulated precipitation.

What is the last month it snows in Attleboro?

May is the last month it regularly snows in Attleboro. During 0.1 snowfall days, in May, Attleboro aggregates 0.28" (7mm) of snow.

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

In May, the average length of the day in Attleboro is 14.6h.

How long on average sun shines in May in Attleboro?

The average sunshine in May is 8.3h.

What is the UV index intensity in May in Attleboro?

The average daily maximum UV index in May in Attleboro, Massachusetts, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Attleboro, MA

Average temperature in May - Attleboro, MA
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in May: 49.6°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 (22.5°F).

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Average pressure in May
Attleboro, MA

Average pressure in May - Attleboro, MA
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in May
Attleboro, MA

Average wind speed in May - Attleboro, MA
  • Average wind speed in May: 7.6mph

The windiest months (with the highest average wind speed) are February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in May
Attleboro, MA

Average humidity in May - Attleboro, MA
  • Average humidity in May: 75%

Months with the highest relative humidity are February, June, September and October (78%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in May
Attleboro, MA

Average rainfall in May - Attleboro, MA
  • Average rainfall in May: 2.17"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.34").

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Average rainfall days in May
Attleboro, MA

Average rainfall days in May - Attleboro, MA
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in May
Attleboro, MA

Average snowfall in May - Attleboro, MA
  • Average snowfall in May: 0.28"

The month with the highest snowfall is March (4.06").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Attleboro, MA

Average snowfall days in May - Attleboro, MA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (7.8 days).
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
Attleboro, MA

Average daylight in May / Average sunshine in May - Attleboro, MA
  • 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: 8.3h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in May
Attleboro, MA

Average sunshine days in May - Attleboro, MA
  • Average sunshine days in May: 13.3 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in May
Attleboro, MA

Average UV index in May - Attleboro, MA
  • 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
Attleboro, MA

Average cloud cover in May - Attleboro, MA
  • Average cloud cover in May: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in May
Attleboro, MA

Average visibility in May - Attleboro, MA
  • Average visibility in May: 6mi

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

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