| NWS Forecast for: De Kalb County Issued by: National Weather Service Chicago, IL Last Update: 341 AM CST Tue Feb 17 2026 | |
Today: Mostly cloudy. Highs in the upper 50s. Southeast winds 5 to 10 mph, increasing to 10 to 15 mph with gusts up to 25 mph in the afternoon. Tonight: Mostly cloudy. A chance of showers in the evening, then showers likely with a slight chance of thunderstorms after midnight. Breezy. Near steady temperature in the lower 50s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 60 percent. Wednesday: Mostly sunny and windy. Highs in the lower 60s. Southwest winds 15 to 25 mph with gusts up to 40 mph. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. Southwest winds 5 to 10 mph, becoming southeast after midnight. Thursday: Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the lower 60s. Southeast winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Chance of precipitation 50 percent. Thursday Night: A slight chance of thunderstorms in the evening. Rain likely. Lows in the lower 30s. Chance of precipitation 70 percent. Friday: Mostly cloudy. A chance of rain and snow, mainly in the morning. Breezy with highs in the lower 40s. Chance of precipitation 30 percent. Friday Night: Partly cloudy. Lows in the mid 20s. Saturday: Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 30s. Saturday Night: Mostly cloudy. Lows in the lower 20s. Sunday: Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 30s. Sunday Night: Partly cloudy. Lows 15 to 20. Monday: Partly cloudy in the morning, then becoming mostly sunny. Highs in the lower 30s. | |
| Zone Forecast: De Kalb County | |
Visit your local NWS office at: https://www.weather.gov/lot |