May weather forecastSomerville, MA
May
Weather in May
Somerville Massachusetts weather in May is marked by a temperature high hitting 66.7°F (19.3°C), signaling the advent of the summer months. May presents itself as one of the ideal months for outdoor activities with extended daylight hours and warm weather. An increase in precipitation is observed from previous months, making this month relatively humid. The frequency of windy days reduces substantially. Incorporating the longer daylight hours and warmer temperatures, locals start to venture out to enjoy the sunny weather.Temperature
With the onset of May, Somerville's average high-temperature experiences a rise, moving from April's mild 55.6°F (13.1°C) to an enjoyable 66.7°F (19.3°C). May sees the temperature falling to a mean low of 49.8°F (9.9°C).Humidity
In May, the average relative humidity is 72%.Rainfall
In Somerville, Massachusetts, in May, it is raining for 4.3 days, with typically 0.28" (7mm) of accumulated precipitation. In Somerville, during the entire year, the rain falls for 47.8 days and collects up to 4.13" (105mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Somerville aggregates 0.04" (1mm) of snow. Throughout the year, there are 13.2 snowfall days, and 2.17" (55mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 37min.On the first day of May in Somerville, 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
The average sunshine in May is 8.4h.UV index
In Somerville, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Somerville, 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 (33.8°F).
- Average low temperature in May: 49.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Somerville, MA
- Average pressure in May: 30.01"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).
Average wind speed in May
Somerville, MA
- Average wind speed in May: 7.2mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Somerville, MA
- Average humidity in May: 72%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (69%).
Average rainfall in May
Somerville, MA
- Average rainfall in May: 0.28"
The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.12").
Average rainfall days in May
Somerville, MA
- Average rainfall days in May: 4.3 days
The month with the highest number of rainy days is April (5.9 days).
The months with the least rainy days are January and September (2.9 days).
Average snowfall in May
Somerville, MA
- Average snowfall in May: 0.04"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Somerville, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Somerville, 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 24min
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 36min).
Average sunshine days in May
Somerville, MA
- Average sunshine days in May: 24.3 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is July (22.8 days).
Average UV index in May
Somerville, 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
Somerville, 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
Somerville, 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).
