May weather forecast
Westwood, MA

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Weather in May

The last month of the spring, May, is a refreshing month in Westwood, Massachusetts, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 49.6°F (9.8°C).

Temperature

Westwood's transition into May is marked by a rise in the average high-temperature, advancing from a moderate 55.9°F (13.3°C) in April to a still refreshing 66.9°F (19.4°C). In the month of May, the average temperature in Westwood dips to a chilly 49.6°F (9.8°C) during the night.

Humidity

The average relative humidity in May in Westwood is 74%.

Rainfall

In Westwood, in May, it is raining for 10.2 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 97.1 rainfall days, and 7.13" (181mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Westwood are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Westwood aggregates 0.08" (2mm) of snow. Throughout the year, there are 19.5 snowfall days, and 3.74" (95mm) of snow is accumulated.

Daylight

The average length of the day in May in Westwood is 14h and 36min.
On the first day of the month, sunrise is at 5:39 am and sunset at 7:44 pm. On the last day of May, in Westwood, Massachusetts, sunrise is at 5:11 am and sunset at 8:14 pm EDT.

Sunshine

In Westwood, 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 threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What is the average May temperature in Westwood?

The high-temperature, in May, in Westwood, is 66.9°F (19.4°C), while the low-temperature averages to 49.6°F (9.8°C).

What is the average humidity in May in Westwood?

In Westwood, Massachusetts, the average relative humidity in May is 74%.

How much does it rain in Westwood in May?

In May, in Westwood, the rain falls for 10.2 days. Throughout May, 0.59" (15mm) of precipitation is accumulated.

What is the last month it snows in Westwood?

May is the last month it regularly snows in Westwood, Massachusetts. During 0.1 snowfall days, in May, Westwood aggregates 0.08" (2mm) of snow.

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

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

When are sunrise and sunset in May in Westwood?

On the first day of May in Westwood, Massachusetts, sunrise is at 5:39 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:11 am and sunset at 8:14 pm EDT.

How many hours of sunshine does Westwood have in May?

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

What is the UV index intensity in May in Westwood?

In Westwood, Massachusetts, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
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
Westwood, MA

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

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

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Average pressure in May
Westwood, MA

Average pressure in May - Westwood, 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
Westwood, MA

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

The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in May
Westwood, MA

Average humidity in May - Westwood, MA
  • Average humidity in May: 74%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in May
Westwood, MA

Average rainfall in May - Westwood, MA
  • Average rainfall in May: 0.59"

The wettest month (with the highest rainfall) is April (0.79").
The driest month (with the least rainfall) is September (0.31").

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Average rainfall days in May
Westwood, MA

Average rainfall days in May - Westwood, MA
  • Average rainfall days in May: 10.2 days

The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in May
Westwood, MA

Average snowfall in May - Westwood, MA
  • Average snowfall in May: 0.08"

The months with the highest snowfall are March and December (0.91").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Westwood, MA

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

The month with the highest number of snowfall days is January (5 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
Westwood, MA

Average daylight in May / Average sunshine in May - Westwood, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
Westwood, MA

Average sunshine days in May - Westwood, MA
  • Average sunshine days in May: 18.3 days

The month with the most sunshine days is November (22 days).
The month with the least sunshine days is July (16.8 days).

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Average UV index in May
Westwood, MA

Average UV index in May - Westwood, 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
Westwood, MA

Average cloud cover in May - Westwood, 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 33).

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Average visibility in May
Westwood, MA

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

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