Sudbury

What is the climate like in Sudbury?

The best time to visit Sudbury is typically August – September, with trip comfort peaking in June (6.9/10). Sudbury is warmest in July, when daily highs average 85°F (29°C), and coolest in January, when lows fall to about 24°F (-5°C). The wettest month is typically December and the driest is June; the year sees roughly 45 in (1133 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in June (6.9/10)
• Warmest monthJuly — average high 85°F (29°C)
• Coolest monthJanuary — average low 24°F (-5°C)
• Wettest monthDecember (4.7 in (120 mm))
• Driest monthJune (3.1 in (80 mm))
• Annual precipitation45 in (1133 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromBedford Hanscom Fld, 14 km away (1949-2026)