May weather forecast
Weymouth, MA

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The modern bridge crossing on the large Fore River passing through Weymouth City, Massachusetts
The modern bridge crossing on the large Fore River passing through Weymouth City, Massachusetts

Weather in May

As the fifth month of the year, May presents a pleasant embrace of warmth, with maximum temperatures soaring to 63.9°F (17.7°C). Markedly warmer than April, the climate in May retains a cozy minimum of about 50.2°F (10.1°C). The month unfolds beautifully, showcasing clear skies and considerably less rainfall allowing residents and visitors to bask in the increasing sunlight. The city navigates between the flowering spring and early summer, providing ample opportunities to enjoy outdoor engagements in a comfortable climate.

Temperature

May's arrival in Weymouth coincides with a rise in the average high-temperature, moving from April's fresh 53.8°F (12.1°C) to a refreshing 63.9°F (17.7°C). May brings an average low-temperature of 50.2°F (10.1°C) to Weymouth.

Humidity

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

Rainfall

In Weymouth, in May, during 16.1 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 152 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

In Weymouth, snow does not fall in May through October.

Daylight

In Weymouth, Massachusetts, the average length of the day in May is 14h and 36min.
On the first day of May in Weymouth, sunrise is at 5:38 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 Weymouth, the average sunshine in May is 8.5h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 5 during May leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in May in Weymouth?

May temperatures vary between a high-temperature of 63.9°F (17.7°C) and a low-temperature of 50.2°F (10.1°C).

What is the average humidity in May in Weymouth?

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

How much does it rain in Weymouth in May?

In May, in Weymouth, the rain falls for 16.1 days. Throughout May, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in Weymouth?

In Weymouth, Massachusetts, snow does not fall in May through October.

Does it snow in Weymouth in May?

In May, in Weymouth, Massachusetts, it doesn't snow. April is the latest month when it typically snows.

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

In Weymouth, Massachusetts, the average day length in May is 14h and 36min.

When are sunrise and sunset in May in Weymouth?

On the first day of May in Weymouth, Massachusetts, sunrise is at 5:38 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 Weymouth?

In May, the average sunshine duration in Weymouth is 8.5h.

What is the UV index intensity in May in Weymouth?

The average daily maximum UV index in May in Weymouth, Massachusetts, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Weymouth, MA

Average temperature in May - Weymouth, MA
  • Average high temperature in May: 63.9°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in May: 50.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in May
Weymouth, MA

Average pressure in May - Weymouth, 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
Weymouth, MA

Average wind speed in May - Weymouth, MA
  • Average wind speed in May: 8.3mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in May
Weymouth, MA

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

The months with the highest relative humidity are February, June and September (77%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in May
Weymouth, MA

Average rainfall in May - Weymouth, MA
  • Average rainfall in May: 2.05"

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in May
Weymouth, MA

Average rainfall days in May - Weymouth, MA
  • Average rainfall days in May: 16.1 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in May
Weymouth, MA

Average snowfall in May - Weymouth, MA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Weymouth, MA

Average snowfall days in May - Weymouth, MA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Weymouth, MA

Average daylight in May / Average sunshine in May - Weymouth, 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 3min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in May
Weymouth, MA

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

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in May
Weymouth, MA

Average UV index in May - Weymouth, MA
  • Average UV index in May: 5

The months with the highest UV index are 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
Weymouth, MA

Average cloud cover in May - Weymouth, MA
  • Average cloud cover in May: 45

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in May
Weymouth, MA

Average visibility in May - Weymouth, 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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Weymouth, Massachusetts, USA

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