| NWS Forecast for: De Kalb County Issued by: National Weather Service Chicago, IL Last Update: 213 AM CDT Sat May 16 2026 | |
Today: Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers early in the morning. A slight chance of showers and thunderstorms late. Highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. Tonight: Mostly cloudy. A slight chance of showers in the evening. A slight chance of thunderstorms. A chance of showers after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of precipitation 40 percent. Sunday: Mostly cloudy. A slight chance of showers and thunderstorms early in the morning. Breezy with highs in the mid 80s. Southeast winds 10 to 15 mph, increasing to south 15 to 20 mph in the afternoon. Gusts up to 30 mph. Chance of precipitation 20 percent. Sunday Night: Mostly clear in the evening, then becoming partly cloudy. Breezy with lows in the mid 60s. South winds 15 to 20 mph with gusts up to 30 mph. Monday: A slight chance of thunderstorms in the morning. Showers. A chance of thunderstorms in the afternoon. Breezy with highs in the mid 80s. South winds 15 to 25 mph with gusts up to 30 mph. Chance of precipitation 90 percent. Monday Night: Showers likely with a chance of thunderstorms. Breezy with lows in the lower 60s. Chance of precipitation 70 percent. Tuesday: Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Breezy with highs in the lower 80s. Chance of precipitation 70 percent. Tuesday Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Chance of precipitation 40 percent. Wednesday: Mostly cloudy. Highs in the mid 60s. Wednesday Night: Partly cloudy. Lows in the lower 40s. Thursday: Partly cloudy. Highs in the mid 60s. Thursday Night: Partly cloudy. Lows in the mid 40s. Friday: Partly cloudy. Highs in the lower 70s. | |
| Zone Forecast: De Kalb County | |
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