Looking at this chart courtesy wx.ca ... I'll stay inside thank you...
And the official warning:
An Arctic air mass will settle over Alberta dropping temperatures to minus 35 to minus 40 overnight. Winds will continue to be from the north at 20 to 30 km/h.
The very cold temperatures combined with the wind will produce extreme wind chill values below minus 40 tonight into Monday morning. High risk of frostbite. Exposed skin can freeze in 5 to 10 minutes or sooner depending on wind speed.
Worst of all - Tuesday is even colder.