Low pressure moving to the Northeast U.S. will continue the rainy weather, with possible flooding, for much of the Northeast on Sunday. Cold air behind the low will bring areas of snow from the Great Lakes into Northern New England. A low moving through the Rockies will strengthen into a potent snow storm for the northern Plains by Sunday night into Monday, with blizzard conditions expected.
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• Today: Mostly cloudy. A 20 percent chance of light rain in the afternoon.

Highs in the mid 50s. North winds 5 to 10 mph shifting to the northeast 10 to 20 mph in the afternoon.
• Tonight: Windy. A chance of light rain in the evening...then light rain...possibly mixed with freezing rain after midnight. Ice accumulation of less than one quarter of an inch. Lows in the upper 20s. Northeast winds 20 to 30 mph. Gusts up to 45 mph after midnight.
• Monday: Windy. Much colder. Sleet...possibly mixed with snow or freezing rain in the morning...then snow in the afternoon. Blowing snow in the afternoon. Snow may be heavy at times. Snow and sleet accumulation of 5 to 10 inches. Highs in the upper 20s. North winds 20 to 35 mph.
• Monday Night: Windy...colder. Cloudy with snow likely in the evening...then partly cloudy after midnight. Blowing snow in the evening...then areas of blowing snow after midnight. Accumulations possible. Lows 5 to 10 above. North winds 25 to 35 mph becoming northwest 15 to 25 mph after midnight. Chance of snow 70 percent.
• Tuesday: Partly sunny. Highs in the mid 20s. North winds 5 to 15 mph.
• Tuesday Night And Wednesday: Mostly cloudy. Lows 10 to 15. Highs in the lower 30s.
• Wednesday Night: Mostly cloudy. Lows in the lower 20s.
• Thursday: Mostly cloudy with a 20 percent chance of light rain or snow. Highs in the mid 30s.