May weather forecast
Truro, MA

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Weather in May

The last month of the spring, May, is a fresh month in Truro, Massachusetts, with an average temperature fluctuating between 49.8°F (9.9°C) and 54.3°F (12.4°C).

Temperature

Truro's weather shows a minor temperature rise with the arrival of May, moving from a chilly 46.8°F (8.2°C) in April to a fresh 54.3°F (12.4°C). Throughout the nights in May, Truro notes an average low of 49.8°F (9.9°C), a small dip from the daytime peak.

Humidity

The average relative humidity in May is 84%.

Rainfall

In May, the rain falls for 14.3 days. Throughout May, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Truro, there are 136.1 rainfall days, and 17.24" (438mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Truro, Massachusetts, the average length of the day in May is 14h and 35min.
On the first day of May in Truro, sunrise is at 5:35 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:08 pm EDT.

Sunshine

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

UV index

In Truro, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 4 during May leads to these advisories:
Guard yourself - Avoiding sunburn is suggested. To protect against the Sun's most potent rays, avoid direct exposure around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are the temperatures in Truro in May?

In May, in Truro, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 49.8°F (9.9°C).

What is the average humidity in May in Truro?

In Truro, Massachusetts, the average relative humidity in May is 84%.

How many days does it rain in May in Truro?

In Truro, in May, during 14.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

When it does not snow in Truro?

May through October are months without snowfall.

Does it snow in Truro in May?

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

How many hours of daylight does Truro have in May?

In Truro, the average day length in May is 14h and 35min.

When are sunrise and sunset in May in Truro?

In May, on the first day of the month, sunrise is at 5:35 am and sunset at 7:39 pm. On the last day of the month, in Truro, Massachusetts, sunrise is at 5:07 am and sunset at 8:08 pm EDT.

How long on average sun shines in May in Truro?

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

What is the UV index reading in May in Truro?

In Truro, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from 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
Truro, MA

Average temperature in May - Truro, MA
  • Average high temperature in May: 54.3°F

The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in May: 49.8°F

The month with the highest average low temperature is August (67.6°F).
The coldest months (with the lowest average low temperature) are January and February (31.6°F).

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Average pressure in May
Truro, MA

Average pressure in May - Truro, MA
  • Average pressure in May: 30.02"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
Truro, MA

Average wind speed in May - Truro, MA
  • Average wind speed in May: 13.2mph

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest months (with the lowest average wind speed) are July and August (11.6mph).

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Average humidity in May
Truro, MA

Average humidity in May - Truro, MA
  • Average humidity in May: 84%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in May
Truro, MA

Average rainfall in May - Truro, MA
  • Average rainfall in May: 1.42"

The wettest month (with the highest rainfall) is October (2.17").
The driest months (with the least rainfall) are February and November (1.18").

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Average rainfall days in May
Truro, MA

Average rainfall days in May - Truro, MA
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in May
Truro, MA

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

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Truro, MA

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

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in May / Average sunshine in May - Truro, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in May
Truro, MA

Average sunshine days in May - Truro, MA
  • Average sunshine days in May: 15 days

The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is December (13.1 days).

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Average UV index in May
Truro, MA

Average UV index in May - Truro, MA
  • Average UV index in May: 4

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
Truro, MA

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

The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in May
Truro, MA

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

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