May weather forecastChestnut Hill, MA
May
Weather in May
The last month of the spring, May, is a comfortable month in Chestnut Hill, Massachusetts, with an average temperature ranging between max 66.7°F (19.3°C) and min 49.6°F (9.8°C).Temperature
In Chestnut Hill, stepping into May brings a temperature increase, moving up from April's mild 55.9°F (13.3°C) to a comfortable 66.7°F (19.3°C). During May, Chestnut Hill sees a mean low-temperature of 49.6°F (9.8°C).Humidity
In Chestnut Hill, the average relative humidity in May is 73%.Rainfall
In Chestnut Hill, in May, it is raining for 8.9 days, with typically 0.51" (13mm) of accumulated precipitation. In Chestnut Hill, during the entire year, the rain falls for 85.9 days and collects up to 5.87" (149mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows in Chestnut Hill. During 0.1 snowfall days, in May, Chestnut Hill aggregates 0.08" (2mm) of snow. Throughout the year, in Chestnut Hill, there are 18.8 snowfall days, and 3.15" (80mm) of snow is accumulated.Daylight
In Chestnut Hill, Massachusetts, the average length of the day in May is 14h and 37min.On the first day of May, sunrise is at 5:38 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:14 pm EDT.
Sunshine
In Chestnut Hill, the average sunshine in May is 8.5h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Chestnut Hill, MA
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.6°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 (21.7°F).
Average pressure in May
Chestnut Hill, 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 (29.92"Hg).
Average wind speed in May
Chestnut Hill, MA
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in May
Chestnut Hill, MA
- Average humidity in May: 73%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall in May
Chestnut Hill, MA
- Average rainfall in May: 0.51"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in May
Chestnut Hill, MA
- Average rainfall days in May: 8.9 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in May
Chestnut Hill, MA
- Average snowfall in May: 0.08"
The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Chestnut Hill, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Chestnut Hill, 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 6min).
- Average sunshine in May: 8h and 30min
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).
Average sunshine days in May
Chestnut Hill, MA
- Average sunshine days in May: 18.7 days
The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).
Average UV index in May
Chestnut Hill, 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).
Average cloud cover in May
Chestnut Hill, 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 32).
Average visibility in May
Chestnut Hill, 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).
