Boston weather in May
May in Boston averages 67°F by day and 50°F at night, with 3.3 inches of precipitation. It is the 5th-warmest and 10th-wettest month of the year here.
- Average high
- 67°F+10° vs April
- Average low
- 50°F0 nights below freezing
- Precipitation
- 3.3 in7 days with 0.1 in. or more
- Snow
- 0.0 in1 days at 90°F+
Is May a good time to visit Boston?
Yes. May is one of the most comfortable months in Boston by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are May to October.
Get outside in Boston in May
May is made for being outside. Try Arnold Arboretum, New England Holocaust Memorial, Boston African American National Historic Site, Belle Isle Marsh Reservation. All things to do in Boston.
On May 15 the sun rises at 5:23 am and sets at 7:58 pm, giving 14h 36m of daylight. Daylight all year.
What to pack for Boston in May
- T-shirts and a light jacket or sweater
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
May nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Boston | 67°F | 50°F | 3.3 in | |
| Cambridge, MA | 3 mi | 67°F | 50°F | 3.3 in |
| Somerville, MA | 3 mi | 67°F | 50°F | 3.3 in |
| Newton, MA | 7 mi | 67°F | 50°F | 3.3 in |
| Quincy, MA | 7 mi | 67°F | 50°F | 3.3 in |
| Lynn, MA | 10 mi | 67°F | 50°F | 3.3 in |
| Brockton, MA | 19 mi | 67°F | 47°F | 3.8 in |
Frequently asked questions
What is the weather like in Boston in May?
In May, Boston averages a high of 67°F and a low of 50°F, with 3.3 inches of precipitation (NOAA 1991-2020 normals).
Is May a good time to visit Boston?
Yes. May is one of Boston's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Boston in May?
Rarely. The May snowfall normal is under half an inch.
Before and after: Boston in April and Boston in June. All twelve months: Boston weather by month.
NOAA NCEI 1991-2020 climate normals, station Boston Logan Intl. Airport, MA, 2.5 miles from the city center.