May weather forecast
Worcester, MA

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Buildings and a sign of Worcester in Massachusetts
Buildings and a sign of Worcester in Massachusetts

Weather in May

Diving deeper into spring, May brings to Worcester an upliftment in temperature and vibrant hues. The city escapes the reign of winter entirely as reflected by an insignificant snowfall of merely 0.24" (6mm). Blossoms find their time in the sun just as people begin spending more time outdoors. Although rainfall frequency slightly increases, it does little to hinder residents from delighting in the onset of warm days. At this juncture, Worcester, in all its blossom-clad splendor, truly comes to life.

Temperature

The shift into May brings an increase in the average high-temperature, moving from a cool 54.9°F (12.7°C) in April to a refreshing 66.9°F (19.4°C). Nightly temperatures drop to an average low of 47.7°F (8.7°C) in May.

Humidity

The average relative humidity in May in Worcester is 75%.

Rainfall

In Worcester, in May, it is raining for 16.3 days, with typically 2.32" (59mm) of accumulated precipitation. In Worcester, during the entire year, the rain falls for 146.1 days and collects up to 28.94" (735mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Worcester aggregates 0.24" (6mm) of snow. Throughout the year, there are 39.9 snowfall days, and 24.45" (621mm) of snow is accumulated.

Daylight

The average length of the day in May in Worcester, Massachusetts, is 14h and 37min.
On the first day of the month, sunrise is at 5:41 am and sunset at 7:47 pm. On the last day of May, sunrise is at 5:13 am and sunset at 8:16 pm EDT.

Sunshine

In Worcester, the average sunshine in May is 8.2h.

UV index

In Worcester, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are the temperatures in Worcester in May?

In Worcester, 66.9°F (19.4°C) is the average high-temperature and 47.7°F (8.7°C) is the average low-temperature during May.

What is the average humidity in May in Worcester?

The average relative humidity in May is 75%.

How much does it rain in Worcester in May?

In Worcester, Massachusetts, in May, during 16.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

What is the last month it snows in Worcester?

May is the last month it regularly snows in Worcester. During 0.1 snowfall days, in May, Worcester aggregates 0.24" (6mm) of snow.

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

In May, the average day length in Worcester is 14h and 37min.

When is the sunrise / sunset in May in Worcester?

On the first day of May in Worcester, Massachusetts, sunrise is at 5:41 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:16 pm EDT.

How many hours of sunshine does Worcester have in May?

In Worcester, the average sunshine duration in May is 8.2h.

What is the UV index intensity in May in Worcester?

In May, the average daily maximum UV index in Worcester is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Worcester, MA

Average temperature in May - Worcester, MA
  • Average high temperature in May: 66.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in May
Worcester, MA

Average pressure in May - Worcester, MA
  • Average pressure in May: 30.01"Hg

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

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Average wind speed in May
Worcester, MA

Average wind speed in May - Worcester, MA
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in May
Worcester, MA

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

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in May
Worcester, MA

Average rainfall in May - Worcester, MA
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is December (2.76").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in May
Worcester, MA

Average rainfall days in May - Worcester, MA
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is May (16.3 days).
The months with the least rainy days are January and February (6.8 days).

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Average snowfall in May
Worcester, MA

Average snowfall in May - Worcester, MA
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Worcester, MA

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

The month with the highest number of snowfall days is February (9.7 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
Worcester, MA

Average daylight in May / Average sunshine in May - Worcester, MA
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in May
Worcester, MA

Average sunshine days in May - Worcester, MA
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in May
Worcester, MA

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

Average cloud cover in May - Worcester, MA
  • Average cloud cover in May: 49

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in May
Worcester, MA

Average visibility in May - Worcester, MA
  • Average visibility in May: 5mi

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

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Worcester, Massachusetts, USA

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