May weather forecastGreat Barrington, MA

May
Weather in May
May is typically characterized by warmer weather and blooming flowers in Great Barrington. Rainfall continues to nourish the blossoming flora leading to a vibrant natural display across the city. The locale comes alive with outdoor activities being a center of attraction. With warmer days and mild nights, it’s a perfect time to explore Great Barrington’s natural beauty and it finally feels like spring has fully arrived in the city.Temperature
May's arrival signals a temperature shift, moving from a fresh 54.1°F (12.3°C) in April to an enjoyable 66.7°F (19.3°C). The nights of May anticipate an average low-temperature of 46.8°F (8.2°C).Humidity
The average relative humidity in May is 77%.Rainfall
In Great Barrington, during May, the rain falls for 16.6 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Great Barrington, during the entire year, the rain falls for 157.8 days and collects up to 31.69" (805mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Great Barrington aggregates 0.39" (10mm) of snow. Throughout the year, there are 55.3 snowfall days, and 29.17" (741mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 36min.On the first day of May, sunrise is at 5:47 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:22 pm EDT.
Sunshine
In May, the average sunshine 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 unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Great Barrington, MA
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in May: 46.8°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in May
Great Barrington, 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 (29.93"Hg).
Average wind speed in May
Great Barrington, MA
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Great Barrington, MA
- Average humidity in May: 77%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Great Barrington, MA
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in May
Great Barrington, MA
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in May
Great Barrington, MA
- Average snowfall in May: 0.39"
The month with the highest snowfall is February (6.89").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Great Barrington, MA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is February (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Great Barrington, MA
- Average daylight in May: 14h and 36min
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 18min
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 54min).
Average sunshine days in May
Great Barrington, MA
- Average sunshine days in May: 12.2 days
The months with the most sunshine days are September and November (15.5 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in May
Great Barrington, MA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Great Barrington, MA
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in May
Great Barrington, MA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).





