Ahead of the cold front temperatures will warm into the upper 40s Sunday and upper 50s Monday. In these areas, a coating to one inch will be possible. This transition should begin between 10 p.m. and midnight for the Shoals. Snow will be relatively light and will not last long, moving out by mid-morning so any accumulation will be light.
But if the cold air is slow to arrive and/or snow is light and mostly waits until after the commute, we could dodge the bullet. During this cold period, wind chills look brutal and likely run well below zero at times.
The first half of this weekend has shaped up pretty nicely with temperatures managing to make up into the mid 30s!
Environment Canada has forecasted that Toronto will see some flurries today, with temperatures falling to -8°C this afternoon, but it will feel more like -18°C with the windchill.
This sets us up for dangerously cold weather for the middle of the week with many spots drop too or below zero by Thursday morning.
Friday morning between 2am and 9am, temperatures in the teens below zero with sustained winds 10-20 miles per hour will yield wind chills as low as -35 degrees.
A strong cold front will move down the east side of the Rockies sometime Sunday night or early Monday morning and it will bring a sharp change to the forecast. Areas of snow and slick travel can dot the region prior to the early week storm as bitterly cold air remains in place.