Typical Weather

Weather in Boston in May

How warm is it in Boston in May?

In May the typical daytime high in Boston is 19.5 °C on average, from 16.4 °C at the start to 22.2 °C at the end of the month.

That is 6.0 °C warmer than in April and 5.1 °C cooler than in June.

The last 10 years were 0.7 °C warmer than more than 40 years ago.

Click a day for more: afternoon and night, the usual range, records and how fast it is warming.

The average of the weather stations Blue Hill Coop (17 km) and Nashua (59 km); nearer ones count more.