Alliston

What is the climate like in Alliston?

The best time to visit Alliston is typically June – September, with trip comfort peaking in September (7.0/10). Alliston 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 September; the year sees roughly 36 in (918 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in September (7.0/10)
• Warmest monthJuly — average high 80°F (27°C)
• Coolest monthJanuary — average low 15°F (-9°C)
• Wettest monthApril (3.7 in (95 mm))
• Driest monthSeptember (2.4 in (62 mm))
• Annual precipitation36 in (918 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromEgbert Cs, 11 km away (2000-2025)