Climate almanac
Bolton
Ontario, CA · 43.88°, -79.74°
What is the climate like in Bolton?
The best time to visit Bolton is typically July – September, with trip comfort peaking in September (7.0/10). Bolton is warmest in July, when daily highs average 80°F (27°C), and coolest in January, when lows fall to about 16°F (-9°C). The wettest month is typically June and the driest is November; the year sees roughly 36 in of precipitation.
- Best time to visitJuly – September — comfort peaks in September (7.0/10)
- Warmest monthJuly — average high 80°F (27°C)
- Coolest monthJanuary — average low 16°F (-9°C)
- Wettest monthJune (3.9 in)
- Driest monthNovember (2.4 in)
- Annual precipitation36 in