The small town of Jasper is nestled in the Rocky Mountains at an elevation of  1100 meters (about 3300 feet) and a latitude of 53 degrees north. The summers here are cool, with average maximum temperatures in July hovering around 24°C (75°F) during the day, and dropping to a chilly 7°C (45°F)  at night. However, warmer temperatures are not unusual - a "heat wave" could generate daytime maximums running at 33C/89F. However, even in midsummer - or a heat wave - you will probably need a jacket or multiple layers to keep warm after sunset. Because of its northern latitude, there are long daylight hours in the summer, and short daylight hours in the winter.

In the winter, the weather is much more severe - although much more moderate than the weather outside the mountains, just a couple of hours' drive away. In fact, the average daily temperature is below freezing from November to March, and during these five months, nearly four feet (120 cm) of snow falls on the town. It is not even unusual for snow to fall as late as May or as early as September, although in general, the town itself, located as it is in the valley bottom, does not begin to accumulate snow until late November or early December. During the summer months, there can be a fair amount of rain--about 5 cm or 2 inches every month between June and August.

Despite the chilly climate, nearly two million visitors still flock to Jasper National Park every year, a testament to the park’s great beauty. In the summer, most of the visitors are there for activities like hiking and rafting, but the winter offers its attractions as well, with skiing and snowboarding at Marmot Basin . The majority of visitors come to Jasper between June and September each year, whereas the winter season tends to peak on weekends and holiday periods like Christmas, school spring breaks, and Easter.