May weather forecast
Allston, MA

Weather in May

The last month of the spring, May, is a comfortable month in Allston, Massachusetts, with an average temperature varying between 49.8°F (9.9°C) and 66.7°F (19.3°C).

Temperature

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

Humidity

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

Rainfall

In Allston, during May, the rain falls for 7.8 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 81.8 rainfall days, and 5.51" (140mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Allston aggregates 0.04" (1mm) of snow. In Allston, 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 May is 14h and 37min.
On the first day of the month, sunrise is at 5:39 am and sunset at 7:43 pm. On the last day of May, in Allston, sunrise is at 5:10 am and sunset at 8:13 pm EDT.

Sunshine

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

UV index

In May, the average daily maximum UV index in Allston is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Allston?

In Allston, 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 Allston?

In May, the average relative humidity is 72%.

How many days does it rain in May in Allston?

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

What is the last month it snows in Allston?

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

How many hours of daylight does Allston have in May?

The average day length in May is 14h and 37min.

When are sunrise and sunset in May in Allston?

On the first day of May in Allston, 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 many hours of sunshine does Allston have in May?

The average sunshine duration in May in Allston, Massachusetts, is 8.4h.

What is the UV index reading in May in Allston?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
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
Allston, MA

Average temperature in May - Allston, 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
Allston, MA

Average pressure in May - Allston, 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
Allston, MA

Average wind speed in May - Allston, 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
Allston, MA

Average humidity in May - Allston, 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
Allston, MA

Average rainfall in May - Allston, 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
Allston, MA

Average rainfall days in May - Allston, 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
Allston, MA

Average snowfall in May - Allston, 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
Allston, MA

Average snowfall days in May - Allston, 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
Allston, MA

Average daylight in May / Average sunshine in May - Allston, 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
Allston, MA

Average sunshine days in May - Allston, 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
Allston, MA

Average UV index in May - Allston, 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
Allston, MA

Average cloud cover in May - Allston, 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
Allston, MA

Average visibility in May - Allston, 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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