Boston, Massachusetts weather in June

Averages from 2021–2025 (150 days of record).

Average high: 78°F
Average low: 60°F
Rainy days: ~11 per month
Total precipitation: 3.0 in
Warmest recorded: 102°F
Coldest recorded: 46°F

Expect June days in Boston, Massachusetts to top out around 78°F and cool to about 60°F overnight, with roughly 11 days of measurable rain across the month. In recent years June has ranged from 46°F to 102°F.

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Current Boston, Massachusetts forecast → · Historical data by Open-Meteo (ERA5).