Night - Mostly clear. Winds from ENE to NE at 4 to 6 mph (6.4 to 9.7 kph). The overnight low will be -4 °F (-20 °C). Partly cloudy with a high of 15 °F (-9.4 °C) and a 70% chance of precipitation.

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Winter storm to ramp up as southern Ontario to see major rush-hour traffic impact on Thursday.... Winter storm to ramp up as southern Ontario to see major rush-hour traffic impact on Thursday.