May weather forecastWeston, MA
May
Weather in May
The last month of the spring, May, is a comfortable month in Weston, Massachusetts, with an average temperature ranging between max 66.9°F (19.4°C) and min 49.6°F (9.8°C).Temperature
With the onset of May, Weston's weather sees a temperature rise, transitioning from a moderate 55.9°F (13.3°C) in April to a comfortable 66.9°F (19.4°C). Throughout the month of May, the average temperature dips to a chilly 49.6°F (9.8°C) at night.Humidity
In May, the average relative humidity is 73%.Rainfall
In Weston, in May, during 10.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Weston, Massachusetts, during the entire year, the rain falls for 106.3 days and collects up to 8.5" (216mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows in Weston. During 0.1 snowfall days, in May, Weston aggregates 0.04" (1mm) of snow. In Weston, during the entire year, snow falls for 19.6 days and aggregates up to 4.02" (102mm) of snow.Daylight
In Weston, the average length of the day in May is 14h and 37min.On the first day of May in Weston, sunrise is at 5:39 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:15 pm EDT.
Sunshine
In Weston, the average sunshine in May is 8.4h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In May, a daily UV index of 5 turns into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Weston, MA
- Average high temperature in May: 66.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°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 (21.6°F).
Average pressure in May
Weston, 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
Weston, MA
- Average wind speed in May: 7mph
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
Weston, 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
Weston, MA
- Average rainfall in May: 0.75"
The wettest months (with the highest rainfall) are April and November (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in May
Weston, MA
- Average rainfall days in May: 10.6 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in May
Weston, MA
- Average snowfall in May: 0.04"
The month with the highest snowfall is December (1.14").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Weston, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Weston, 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 42min).
Average sunshine days in May
Weston, MA
- Average sunshine days in May: 17 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is June (15.8 days).
Average UV index in May
Weston, 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
Weston, 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
Weston, 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).
