Climate almanac
Chatham
Ontario, Canada · 42.41°, -82.18°
What is the climate like in Chatham?
The best time to visit Chatham is typically June – September, with trip comfort peaking in September (7.2/10). Chatham is warmest in July, when daily highs average 82°F (28°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically July and the driest is November; the year sees roughly 38 in (964 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in September (7.2/10)
- Warmest monthJuly — average high 82°F (28°C)
- Coolest monthJanuary — average low 23°F (-5°C)
- Wettest monthJuly (3.8 in (97 mm))
- Driest monthNovember (2.5 in (65 mm))
- Annual precipitation38 in (964 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromRidgetown Rcs, 25 km away (2003-2024)