It looks like Calgary will have a very white Thanksgiving.
According to Environment Canada, as much as 4 centimetres of snow is forecasted to fall in Calgary on Friday beginning at approximately 9 am. Temperatures will hover at around the freezing mark throughout the day before warming up slightly by Saturday when the snowfall transitions into rain.
However, temperatures are expected to drop again by Saturday night, bringing periods of snow on Sunday and Thanksgiving Monday.
Snow has already begun falling elsewhere in the prairies due to the southward rush of cold arctic air. Saskatoon recorded over 30 centimetres as of earlier this evening, well above its monthly average of approximately 10 centimetres.
On average in October, Calgary also typically sees 10 centimetres of snow throughout the month.
The conditions in Eastern Canada contrast greatly as summer-like temperatures of 22°C and 24°C are expected for Toronto and Montreal, respectively, on Friday. To the west, a major rain and windstorm with winds of up to 70 km/hr is expected to hit Vancouver overnight.