The temperatures in Boston in May are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Boston during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Boston in May 2025.
If you’re planning to visit Boston in the near future, we highly recommend that you review the 14 day weather forecast for Boston before you arrive.
Temperatures
20° / 10°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
100
mm
Sun Hours
8.9
Hrs
