Acton (ON) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to very cold in Acton. Average daytime temperatures reach a comfortable 27°C (81°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -1°C (30°F).

At night, temperatures range from around 15°C (59°F) in July to -10°C (14°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Acton has a moderate amount of precipitation, averaging 944 mm (37 in) of rain/snowfall annually. Despite minor fluctuations, Acton enjoys fairly consistent precipitation throughout the year. In June, you can expect around 97 mm (3.8 in) of precipitation, while in February, Acton receives about 63 mm (2.5 in). For more details, please visit our Acton Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Acton can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 2.6 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Acton.

The city experiences its highest humidity in January, reaching 72%. In May, the humidity drops to its lowest level at 53%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year