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Update 8:05pm: As of 8pm the temperature has dropped to 1.7C here on Ile Perrot and the rain has changed to snow. It is still raining at the airport at 0.8C.
Low pressure and associated cold front is moving across the St. Lawrence Valley this evening. Cool air is spilling into the region and changing rain to snow across eastern Ontario and southern Quebec. At 7pm snow is falling in Ottawa at 0C and the temperature has dropped to 1C with light rain in Montreal. The rain should change to snow here before 9pm. Look for light wet snow to continue into the overnight hours. Accumulations will be from 2-4cm locally with higher amounts of 5-10cm across the higher elevations of upstate New York and Vermont. If you are travelling tonight watch for slick spots and lower visibility in any snow. At this time Halloween Sunday looks breezy and chilly with just a chance of showers for the trick or treaters.
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