Climate almanac
Alliston
Ontario, Canada · 44.15°, -79.87°
What is the weather like in Alliston in May?
In May, Alliston is typically 66°F (19°C) during the day and 46°F (8°C) at night. The month brings about 3.1 in (79 mm) of precipitation in total.
- Average high66°F (19°C)
- Average low46°F (8°C)
- Precipitation3.1 in (79 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)