Boston, Massachusetts Weather:
Tuesday, July 21, 2026
Partly Sunny with Showers
Day 81°
Night 66°
Precipitation 75 %
Wind 8 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (July 21, 2025)
Night

Day

79°

Night

57°

Wind

7 mph

Precipitation

1 %