Duncan (BC) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to chilly in Duncan. Average daytime temperatures reach a comfortable 24°C (75°F) in July. In December, the coolest month of the year, temperatures drop to a chilly 7°C (45°F).

At night, temperatures range from around 13°C (55°F) in July to 1°C (34°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Duncan has a relatively rain/snowy climate with high precipitation levels, averaging 1452 mm (57 in) of rain/snowfall annually. Duncan can be quite wet during November, receiving approximately 209 mm (8.2 in) of precipitation over 20 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 30 mm (1.2 in) of precipitation spread across 7 rainy days days. For more details, please visit our Duncan Precipitation page.

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

The average number of days each month with precipitation

Duncan can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 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 Duncan.

The city experiences its highest humidity in January, reaching 78%. In July, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year