May weather forecast
Cambridge, MA

The John Weeks Memorial Footbridge in Cambridge, Massachusetts, over the Charles River calm waters, and a distant view of the Havard University student residence unit
The John Weeks Memorial Footbridge in Cambridge, Massachusetts, over the Charles River calm waters, and a distant view of the Havard University student residence unit

Weather in May

May, the last month of the spring in Cambridge, is a comfortable month, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 49.8°F (9.9°C).

Temperature

In Cambridge, the average high-temperature in May increases from a moderate 55.6°F (13.1°C) in April to a comfortable 66.7°F (19.3°C). In May, in Cambridge, the average low-temperature is 49.8°F (9.9°C).

Humidity

The average relative humidity in May in Cambridge is 72%.

Rainfall

In Cambridge, during May, the rain falls for 7.8 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Cambridge, Massachusetts, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, Cambridge aggregates 0.04" (1mm) of snow. Throughout the year, in Cambridge, there are 16.8 snowfall days, and 2.4" (61mm) of snow is accumulated.

Daylight

In Cambridge, the average length of the day in May is 14h and 37min.
On the first day of May, sunrise is at 5:39 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:13 pm EDT.

Sunshine

In Cambridge, the average sunshine in May is 8.4h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from 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 sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 average humidity in May in Cambridge?

In Cambridge, Massachusetts, the average relative humidity in May is 72%.

How much does it rain in Cambridge in May?

In Cambridge, Massachusetts, during May, the rain falls for 7.8 days and regularly aggregates up to 0.43" (11mm) of precipitation.

What is the last month it snows in Cambridge?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Cambridge aggregates 0.04" (1mm) of snow.

How many hours of daylight does Cambridge have in May?

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

When is the sunrise / sunset in May in Cambridge?

On the first day of May in Cambridge, Massachusetts, sunrise is at 5:39 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:13 pm EDT.

How long on average sun shines in May in Cambridge?

In Cambridge, the average sunshine duration in May is 8.4h.

How high is the UV index in May in Cambridge?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from 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
Cambridge, MA

Average temperature in May - Cambridge, 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 (33.8°F).

  • Average low temperature in May: 49.8°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in May
Cambridge, MA

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

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Cambridge, MA

Average wind speed in May - Cambridge, MA
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in May
Cambridge, MA

Average humidity in May - Cambridge, MA
  • Average humidity in May: 72%

The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).

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Average rainfall in May
Cambridge, MA

Average rainfall in May - Cambridge, MA
  • Average rainfall in May: 0.43"

The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days in May
Cambridge, MA

Average rainfall days in May - Cambridge, MA
  • Average rainfall days in May: 7.8 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in May
Cambridge, MA

Average snowfall in May - Cambridge, MA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Cambridge, MA

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

The month with the highest number of snowfall days is January (4.8 days).
The 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
Cambridge, MA

Average daylight in May / Average sunshine in May - Cambridge, MA
  • Average daylight in May: 14h and 37min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in May: 8h and 24min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
Cambridge, MA

Average sunshine days in May - Cambridge, MA
  • Average sunshine days in May: 19.4 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).

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Average UV index in May
Cambridge, MA

Average UV index in May - Cambridge, 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
Cambridge, MA

Average cloud cover in May - Cambridge, MA
  • Average cloud cover in May: 46

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in May
Cambridge, MA

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

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

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