Jasper Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Jasper, Alberta during each month of the year.
The average high and low temperatures are listed below monthly and annually for the Rocky Mountain town, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 10, 20 or 30 °C each month in Jasper, scroll down farther. There are also monthly and yearly counts of days with frost and cold weather.
All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.
|High °F||Low °F||High °C||Low °C|
Days of Hot Weather in Jasper
Jasper's hottest temperatures of the year are usually in the low-thirties Celsius. A day that hot can show up as early as May or as late as September. The thermometer here normally doesn't rise above 35 degrees Celsius (95 °F).
When Jasper Has Frosty Weather
Jasper typically has 199 days a year when the minimum temperature is at 0 °C or below. The average date for the last frost in spring is May 30. Frost normally returns here on September 9. The frost-free period extends for 101 days on average between the final spring frost and the first fall frost.
How Often Jasper Has Cold Temperatures
The chilliest winter nights at Jasper have lows in the minus-thirties Celsius (below -22 °F). The mountain resort averages five nights a year, from November to March, when the thermometer drops that low.
From October to April, Jasper can remain below freezing all day long. It typically has 70 days a year which never warm up to above 0 °C.
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.