***EXTREME COLD WARNING***

TONIGHT..Clear. Low minus 33. Wind Chill at times near minus 40.

TOMORROW (CHRISTMAS EVE)..Mostly sunny. High minus 21. Wind Chill minus 42 in the morning, then minus 30 in the afternoon.

TOMORROW NIGHT..Increasing cloud, with a 30% chance of late-day snow. Low minus 26, then rising.

SUNDAY (CHRISTMAS DAY)..70% chance of light snow, with 2-4cm. High minus 17.

MONDAY (BOXING DAY)..Partly sunny at times. High minus 13

TUESDAY..Partly sunny, with a 30% chance of light snow. High minus 10