May weather forecast and climate
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
May, the last month of the spring, in Cambridge, is an enjoyable month, with average temperature ranging between max 66.7°F (19.3°C) and min 49.8°F (9.9°C).

Temperature

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

Humidity

In Cambridge, the average relative humidity 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, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.

Snowfall

Months with snowfall in Cambridge are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Cambridge aggregates 0.04" (1mm) of snow. In Cambridge, Massachusetts, during the entire year, snow falls for 16.8 days, and aggregates up to 2.4" (61mm) of snow.

Daylight

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

Sunshine

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

UV index

In May, the average daily maximum UV index in Cambridge is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Cambridge?

In Cambridge, Massachusetts, in May, the average high-temperature is 66.7°F (19.3°C), and the average low-temperature is 49.8°F (9.9°C).

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 May, in Cambridge, the rain falls for 7.8 days. Throughout May, 0.43" (11mm) of precipitation is accumulated.

What is the last month it snows in Cambridge?

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

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

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

How many hours of sunshine does Cambridge have in May?

The average sunshine in May is 8.4h.

What is the UV index intensity in May in Cambridge?

In May, the average daily maximum UV index in Cambridge is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.
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).

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

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

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).

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

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

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").

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).

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

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

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).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Cambridge, 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: 9.1h).

  • Average sunshine in May: 8.4h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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).

Average UV index in May - Cambridge, 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).

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).

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

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