Boston Weather in May: Temperature, Precipitation, Wind
In May, Boston has mild and pleasant weather with occasional cool days. The average temperature is around 15.7°C (60.3°F), with highs of 20.6°C (69.1°F) and lows of 10.9°C (51.6°F). The average daily temperature feels like 15.3°C (59.6°F). Boston sees an average of 1.99 inches of precipitation throughout the month, with a 35.5% chance of precipitation on any given day. There are 11 days on average with some rainfall. The most common type of precipitation is rain, and the city experiences partly cloudy conditions most frequently. The average humidity in May is 54.6%, and the average windspeed is 29.0 km/h (18.0 mph). The strongest gusts of wind can reach up to 42.1 km/h (26.2 mph) on average. May in Boston has an average cloud cover of 49.8%, and the average visibility is 15.5 km (9.6 miles). The average UV index is 7.4, which represents a high risk of harm from unprotected sun exposure, and the average air pressure is 1015.6 mb (29.99 in). May is the beginning of the warm season in Boston, and residents and visitors can enjoy increasing temperatures and longer days with the sunrise around 5:23 am and sunset around 7:59 pm.
What is the temperature in Boston in May?
Average air temperature in Boston is 15.7°C (60.3°F) in May. The outside temperature in Boston feels like 15.3°C (59.6°F) on a typical May day. The highest average temperature during sunny days is 20.6°C (69.1°F) and feels like 20.4°C (68.7°F). The lowest average temperature after dark is 10.9°C (51.6°F) which feels like 10°C (49.9°F).
How hot is Boston in May?
The hot temperature in May in Boston rises to 30°C (86°F) on sunny days with low cloud coverage and 54.6% humidity. During hottest days of May it feels like 28.8 °C (83.8°F). The average maximum temp in Boston is 20.6°C (83.8°F) during day time in May.
How cold is Boston in May?
The coldest temp in Boston in May drops to 5.4°C (41.7°F) during the cold nights. With 29km/h (18mph) winds and 54.6% humidity it feels like 1.9°C (35.4°F) on the coldest nights. The average minimum temperature is 10.9°C (51.6°F) during night time in May.
Does it rain in Boston in May?
Yes, it rains for 11 days in Boston, United States in May averaging 1.99 mm of precipitation. Boston has a 35.5% chance for rain throughout the entire month of May.
How much does it rain in Boston throughout May?
Boston has 1.99 mm (0.08 inch) of rain per day on average in May. It rains for an average of 11 days out of the entire month.
Is Boston windy in May?
The average speed of wind in Boston, United States during May is 29km/h (18mph) and average windgust is 42.1km/h (26.2mph). On some days in May wind can reach up to 45.2km/h (28.1mph).
What is the direction of the wind in Boston in May?
Most days of May the wind is blowing from South-Southwest direction in Boston.
What are the humidity levels in Boston in May?
The average humidity levels in Boston in May are 54.6%. Daily humidity levels in Boston range from 30.9% to 88.5% during May.
How many hours of daylight are in Boston in May?
Boston has 14 hours 36 minutes of daylight in May on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Boston in May is at 5:23:11 and the sunset is at 19:59:26.
What is the cloud coverage in Boston in May?
Clouds cover 49.8% of the sky on average throughout May in Boston. The cloud coverage ranges from 5.3% to 99% depending on the day of the month.
What is the UV level in May in Boston?
The average UV index in Boston is 7.4 in May. UV levels change throughout the month and range from 2 to 10.
What is the solar radiation in Boston in May?
The average solar radiation is 224.8 W/m2 (Watts per square meter) in Boston during May. However solar radiation levels change throughout the month and range from 64.5 W/m2 to 282.5 W/m2.
What is the solar energy during May in Boston?
The average solar energy during May in Boston is 19.5 MJ/m2 (megajoules per square metre). Solar energy ranges from 5.6 MJ/m2, to 24.5 MJ/m2 during May.
Are there severe weather risks in Boston in May?
Yes, there is a 10% risk for severe weather in Boston, United States in May.
What is the air pressure in Boston in May?
On average the air pressure in Boston in May is 1015.6 mb (millibars). Throughout the month the sea level pressure ranges from 990.7 mb to 1027.5 mb.
What is the visibility in Boston in May?
The average daylight visibility in Boston in May is 15.5 km (9.7 miles). Depending on the precipitation the visibility ranges from 11.8 km (7.3 miles) to 16 km (9.9 miles) throughout May.
What is the dew point in Boston in May?
The average dew point in Boston during May is 5.3°C (41.6°F).
Where is the data for Boston climate in May coming from?
The climate data for Boston, Massachusetts, United States in May is collected from the following weather stations.
- Northeastern University MA US WEATHERSTEM
- BEDFORD HANSCOM FIELD, MA US
- BOSTON, MA US
- NORWOOD MEMORIAL AIRPORT, MA US
- KB1DML Cambridge MA US
- KBED
- KBOS
- KOWD