Freezing Rain Warning in effect for Montreal, Ottawa and the St. Lawrence Valley. If possible, limit travel overnight and early Friday morning. Conditions will improve in Montreal and points south and west early in the morning. Icy travel may persist north and east of Montreal through most of Friday.
A brief 24 hour warming trend is on the way for southern Quebec and the St. Lawrence Valley through Friday. We finally received a little snow on Boxing Day, making it look a touch festive. Unfortunately the 1 to 2cm of fluffy snow also created icy travel and the usual amount of accidents on Montreal highways. Thursday morning was cold, with morning lows of -17C (2F) here on L'Ile Perrot. The cold air will moderate significantly over the next day or so as a strong winter storm moves into the central Great Lakes.
Montreal will once again be on the warm side of the storm, with a messy mix of precipitation expected to change to rain by mid-morning Friday. After a sunny, cold day today, clouds will increase late this evening. The high today in Montreal will be near -9C (16F), with the temperature rising overnight all the way up to and above the 0C mark by early Friday. Expect a warm, windy high of 5C (41F) on Friday. In terms of precipitation, snow will begin after midnight in Montreal and accumulate 2 to 4cm before changing to freezing rain. We can expect a couple of hours of freezing rain, with less than 5mm of ice accretion expected.
The whole mess should change to rain by noon Friday. The warm air will be short-lived, with a strong cold front crossing the region early Saturday morning. Look for rain to change to light snow Saturday, along with plummeting temperatures. The low Saturday night is expected to be near -16C. Another round of snow is possible for New Years Eve, however accumulations should be on the light side.
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