Weather in Boston in May
In an average May, Boston sees a daily high around 67°F and a low around 50°F, based on 1980–2026 of local climate records.
| Average high | 67°F |
|---|---|
| Typical high range | 56°F to 79°F |
| Average low | 50°F |
| Typical low range | 42°F to 58°F |
| Average daily precipitation | 0.10 in |
May records
The most extreme May on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
94°F
2017-05-18
Lowest
45°F
1987-05-05
Low
Highest
72°F
1991-05-25
Lowest
34°F
2008-05-01
Feels-like
Highest
112°F
1987-05-30
Lowest
25°F
2020-05-10
Humidity
Highest
17.8 g/m³
1996-05-21
Lowest
2.7 g/m³
1995-05-07
Wind
Highest
25 mph
2026-05-30
Lowest
4 mph
1982-05-03
Gust
Highest
59 mph
1989-05-06
Lowest
10 mph
2003-05-19
Precip
Wettest
7.78 in
2006
Driest
0.82 in
1993
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