May weather in Boston, United States
Averages from 155 days in May across 2020–2024.
Typical conditions
| Average high | 20.1°C |
|---|---|
| Average low | 9.7°C |
| Average mean | 14.8°C |
| Total precipitation | 434.4 mm |
| Rainy days | 77 |
| Average precipitation hours | 3.3 h |
| Average max wind speed | 21.3 km/h |
| Average sunshine | 10.8 h/day |
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