Jasper Weather in December

The climate in Jasper during December can be summarized as mild and a little damp.

December is in the winter in Jasper and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 5°C (42°F) is normal.

On average December is the 5th driest month of the year in Jasper with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.5 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Jasper in December 2025.