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

The climate in Arnprior is known for significant temperature differences throughout the year, making the weather dynamic. 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 -4°C (25°F).

At night, temperatures range from around 15°C (59°F) in July to -15°C (5°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Arnprior has a notably wet climate with abundant precipitation, recording 1013 mm (40 in) of rain/snowfall per year. Despite minor fluctuations, Arnprior enjoys fairly consistent precipitation throughout the year. In June, you can expect around 99 mm (3.9 in) of precipitation, while in February, Arnprior receives about 64 mm (2.5 in). For more details, please visit our Arnprior Precipitation page.

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

The average number of days each month with precipitation

Arnprior can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.3 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.8 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 moderate throughout the year in Arnprior.

The city experiences its highest humidity in December, reaching 72%. In May, the humidity drops to its lowest level at 49%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year