Climate Insights for Jasper

The climate in Jasper is cold. The average annual temperature is -2°C and approximately 921mm of precipitation falls per year. Jasper receives a notable amount of rainfall throughout the year, including during its driest month. Jasper is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are December, February, January, when temperatures can drop to -17°C. Jasper experiences heavy snowfall, typically from January through December.

Temperatures in Jasper vary considerably across the year, with a 35°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 18°C with a mean of 11°C. December brings the harshest conditions, with lows dropping to -17°C and an average temperature of -14°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Jasper is a moderately rainy area, receiving approximately 921mm of precipitation annually, which averages out to around 77mm per month. The wettest month is June, averaging 120mm of rainfall. July and August also tend to see above-average precipitation. The driest month is January, with just 52mm. That's 68mm less than June, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Jasper receives heavy snowfall, accumulating around 389cm annually from January through December. The snowiest month is November, with approximately 53cm. Winter travel should account for significant snow cover.

Jasper is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in Jasper, which began on March 20, 2026. Jasper is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 18°C, while the coldest stretch bottoms out in December near -17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Jasper based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.