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

The climate in Kemptville is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -3°C (27°F) during cooler months like January.

At night, you can expect temperatures ranging from 15°C (59°F) in July to around -14°C (7°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Kemptville has a notably wet climate with abundant precipitation, recording 1074 mm (42 in) of rain/snowfall per year. Year-round, Kemptville has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 105 mm (4.1 in), and the driest month, February, with 69 mm (2.7 in), is minimal. For more details, please visit our Kemptville Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Kemptville. While July receives considerable daily sunshine with up to 9.3 hours, December marks the darkest time of the year, where sunshine is scarce 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 Kemptville.

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