May weather forecast
South Lee, MA

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Weather in May

May, the last month of the spring in South Lee, is an enjoyable month, with an average temperature fluctuating between 66°F (18.9°C) and 46°F (7.8°C).

Temperature

South Lee sees an increase in the average high-temperature with the arrival of May, moving from April's fresh 53.1°F (11.7°C) to a comfortable 66°F (18.9°C). In the month of May, South Lee's average low-temperature falls to a chilly 46°F (7.8°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

In May, the rain falls for 10.5 days. Throughout May, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in South Lee, there are 88.8 rainfall days, and 7.32" (186mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, South Lee aggregates 0.12" (3mm) of snow. In South Lee, during the entire year, snow falls for 33.4 days and aggregates up to 5.87" (149mm) of snow.

Daylight

The average length of the day in May is 14h and 37min.
On the first day of May in South Lee, sunrise is at 5:47 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:22 pm EDT.

Sunshine

The average sunshine in May is 8.3h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The average high-temperature and low-temperature during May are 66°F (18.9°C) and 46°F (7.8°C) respectively.

What is the average humidity in May in South Lee?

In May, the average relative humidity is 78%.

How much does it rain in May?

In South Lee, in May, during 10.5 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.4 snowfall days, in May, South Lee aggregates 0.12" (3mm) of snow.

How many hours of daylight does South Lee have in May?

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

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:47 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:22 pm EDT.

How long on average sun shines in May?

In South Lee, the average sunshine duration in May is 8.3h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May?

In South Lee, 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
South Lee, MA

Average temperature in May - South Lee, MA
  • Average high temperature in May: 66°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 (28°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in May
South Lee, MA

Average pressure in May - South Lee, MA
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
South Lee, MA

Average wind speed in May - South Lee, MA
  • Average wind speed in May: 6.6mph

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
South Lee, MA

Average humidity in May - South Lee, MA
  • Average humidity in May: 78%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (76%).

Average rainfall in May
South Lee, MA

Average rainfall in May - South Lee, MA
  • Average rainfall in May: 0.75"

The wettest month (with the highest rainfall) is July (0.83").
The driest month (with the least rainfall) is September (0.35").

Average rainfall days in May
South Lee, MA

Average rainfall days in May - South Lee, MA
  • Average rainfall days in May: 10.5 days

The month with the highest number of rainy days is July (11 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in May
South Lee, MA

Average snowfall in May - South Lee, MA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is December (1.34").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
South Lee, MA

Average snowfall days in May - South Lee, MA
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
South Lee, MA

Average daylight in May / Average sunshine in May - South Lee, 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 6min).

  • Average sunshine in May: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in May
South Lee, MA

Average sunshine days in May - South Lee, MA
  • Average sunshine days in May: 17.4 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is June (17.1 days).

Average UV index in May
South Lee, MA

Average UV index in May - South Lee, MA
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in May
South Lee, MA

Average cloud cover in May - South Lee, MA
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in May
South Lee, MA

Average visibility in May - South Lee, MA
  • Average visibility in May: 5mi

The months with the highest visibility are April and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and November (5mi).

South Lee, Massachusetts, USA

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