National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Hazardous Weather Conditions

Current Conditions

Cook County

Zone Forecast

  • Rest Of Tonight Cloudy with patchy light freezing drizzle late. Temperatures nearly steady in the lower 30s. South winds 5 to 10 mph.
  • Sunday Cloudy. Patchy drizzle in the morning. Highs in the upper 30s. South winds 10 to 20 mph.
  • Sunday Night Cloudy. Lows in the lower 30s. South winds 10 to 20 mph.
  • Monday Cloudy with a 50 percent chance of light rain. Highs in the mid 40s. South winds 10 to 20 mph with gusts up to 30 mph.
  • Monday Night Rain likely. Lows around 40. South winds 10 to 20 mph. Gusts up to 30 mph in the evening. Chance of precipitation 70 percent.
  • Tuesday Rain likely. Highs in the mid 40s. Chance of precipitation 60 percent.
  • Tuesday Night Rain likely and a chance of snow in the evening...then snow and rain likely after midnight. Lows in the mid 30s. Chance of precipitation 60 percent.
  • Wednesday Snow and rain likely in the morning...then snow likely in the afternoon. Highs in the upper 30s. Chance of precipitation 60 percent.
  • Wednesday Night Mostly cloudy with a 30 percent chance of light snow. Lows in the mid 20s.
  • Christmas Day And Thursday Night Mostly cloudy. Highs in the mid 30s. Lows in the mid 20s.
  • Friday Mostly cloudy with a 30 percent chance of light rain showers or light snow showers. Highs in the upper 30s.
  • Friday Night Mostly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s.
  • Saturday Partly sunny. Highs in the upper 20s.