• A strong storm system will bring wind, rain, and mountain snow to the Pacific Northwest and Northern Rockies through Tuesday. Wintry weather will move into the Northern Plains on Monday, and will spread into the Upper Midwest through the mid-week. Widespread heavy snowfall, dangerously cold wind chills, and drifting snow are possible for this area.
• Today: Mostly cloudy. A 50 percent chance of sleet...possibly mixed with rain and freezing rain in the morning. Highs in the lower 40s. South winds 5 to 10 mph.

• Tonight: Mostly cloudy. A chance of light snow in the evening... Then light snow likely...possibly mixed with sleet after midnight. Snow and sleet accumulation up to 1 inch. Lows in the upper 20s. Northeast winds 5 to 15 mph. Chance of precipitation 70 percent.
• Tuesday: Light snow...possibly mixed with sleet in the morning...then light snow in the afternoon. Snow and sleet accumulation of 1 to 2 inches. Highs in the upper 20s. Temperature steady or slowly falling in the afternoon. North winds 10 to 20 mph.
• Tuesday Night: Windy...colder. Light snow likely. Areas of blowing snow. Accumulations possible. Lows 5 to 10 above. Northwest winds 20 to 30 mph. Chance of snow 70 percent.
• Wednesday: Breezy...colder. Cloudy with a 30 percent chance of light snow. Highs 10 to 15. Northwest winds 20 to 25 mph.
• Wednesday Night: Mostly cloudy with a 20 percent chance of light snow. Lows around 5 below. Wind chill readings 15 below to 25 below zero.
• Thursday Through Saturday: Partly cloudy. Highs zero to 5 above. Lows around 10 below. Wind chill readings 25 below to 35 below zero.
• Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows around 10 below. Wind chill readings 15 below to 25 below zero.