Climate almanac
Peterborough
Ontario, Canada · 44.30°, -78.32°
What is the climate like in Peterborough?
The best time to visit Peterborough is typically June – September, with trip comfort peaking in September (6.9/10). Peterborough is warmest in July, when daily highs average 80°F (27°C), and coolest in January, when lows fall to about 15°F (-9°C). The wettest month is typically April and the driest is November; the year sees roughly 40 in (1019 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in September (6.9/10)
- Warmest monthJuly — average high 80°F (27°C)
- Coolest monthJanuary — average low 15°F (-9°C)
- Wettest monthApril (4.2 in (106 mm))
- Driest monthNovember (2.7 in (68 mm))
- Annual precipitation40 in (1019 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromPeterborough Trent U, 6 km away (2005-2023)