May weather forecast
South Chatham, MA

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Weather in May

May, the last month of the spring in South Chatham, is a fresh month, with an average temperature varying between 54.3°F (12.4°C) and 50.5°F (10.3°C).

Temperature

Entering May, South Chatham notices a subtle temperature elevation, with the average high-temperature advancing from April's chilly 46.9°F (8.3°C) to a cool 54.3°F (12.4°C). South Chatham welcomes an average low temperature of 50.5°F (10.3°C) in May, a gentle shift from the day's high.

Humidity

In May, the average relative humidity is 84%.

Rainfall

In South Chatham, in May, it is raining for 14.6 days, with typically 1.81" (46mm) of accumulated precipitation. In South Chatham, during the entire year, the rain falls for 142.4 days and collects up to 22.09" (561mm) of precipitation.

Snowfall

In South Chatham, snow does not fall in May through October.

Daylight

The average length of the day in May is 14h and 33min.
On the first day of May, sunrise is at 5:35 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:07 pm EDT.

Sunshine

In May, the average sunshine in South Chatham is 8.4h.

UV index

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What are the temperatures in South Chatham in May?

In South Chatham, in May, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in South Chatham?

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

How much does it rain in South Chatham in May?

In South Chatham, Massachusetts, in May, during 14.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

When it does not snow in South Chatham?

In South Chatham, snow does not fall in May through October.

Does it snow in South Chatham in May?

In May, in South Chatham, 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 South Chatham?

The average day length in May in South Chatham, Massachusetts, is 14h and 33min.

What time are sunrise and sunset in May in South Chatham?

On the first day of May in South Chatham, sunrise is at 5:35 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:07 pm EDT.

How long on average sun shines in May in South Chatham?

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

How high is the UV index in May in South Chatham?

The average daily maximum UV index in May in South Chatham, Massachusetts, is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
South Chatham, MA

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

The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).

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Average pressure in May
South Chatham, MA

Average pressure in May - South Chatham, 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
South Chatham, MA

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

The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).

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Average humidity in May
South Chatham, MA

Average humidity in May - South Chatham, MA
  • Average humidity in May: 84%

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

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Average rainfall in May
South Chatham, MA

Average rainfall in May - South Chatham, MA
  • Average rainfall in May: 1.81"

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").

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Average rainfall days in May
South Chatham, MA

Average rainfall days in May - South Chatham, MA
  • Average rainfall days in May: 14.6 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall in May
South Chatham, MA

Average snowfall in May - South Chatham, MA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
South Chatham, MA

Average snowfall days in May - South Chatham, MA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (6 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
South Chatham, MA

Average daylight in May / Average sunshine in May - South Chatham, 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 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days in May
South Chatham, MA

Average sunshine days in May - South Chatham, MA
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).

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Average UV index in May
South Chatham, MA

Average UV index in May - South Chatham, 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
South Chatham, MA

Average cloud cover in May - South Chatham, MA
  • Average cloud cover in May: 45

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in May
South Chatham, MA

Average visibility in May - South Chatham, 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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South Chatham, Massachusetts, USA

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