| NWS Forecast for: De Kalb County Issued by: National Weather Service Chicago, IL Last Update: 841 PM CDT Sun Jul 19 2026 |  |
Tonight: Partly cloudy. Smoke. Lows in the lower 60s. East winds around 5 mph, becoming southeast after midnight. Monday: Partly cloudy in the morning, then becoming mostly cloudy. Smoke in the morning. A slight chance of showers late. Highs in the mid 80s. South winds 5 to 10 mph, increasing to southwest 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 20 percent. Monday Night: A chance of showers and thunderstorms early in the evening, then showers and thunderstorms likely in the late evening and early morning. A chance of showers and thunderstorms late. Humid with lows in the lower 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of precipitation 70 percent. Tuesday: Partly cloudy in the morning, then becoming mostly sunny. Humid with highs in the lower 80s. Northwest winds 15 to 20 mph with gusts up to 25 mph. Tuesday Night: Mostly clear. Lows in the upper 50s. North winds 10 to 15 mph. Wednesday: Sunny. Highs in the mid 70s. Wednesday Night: Clear. Lows in the mid 50s. Thursday: Mostly sunny. Highs around 80. Thursday Night: Partly cloudy. Lows in the upper 50s. Friday: Partly cloudy. Highs in the lower 80s. Friday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. Saturday: Mostly sunny. Highs in the mid 80s. Saturday Night: Mostly clear. Lows in the mid 60s. Sunday: Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s. | |
| Zone Forecast: De Kalb County | |
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