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Hourly weather forecast in DeKalb, IL. Check current conditions in DeKalb, IL with radar, hourly, and more.
Hourly Local Weather Forecast, weather conditions, precipitation, dew point, humidity, wind from Weather.com and The Weather Channel.
Be prepared with the most accurate 10-day forecast for DeKalb, IL with highs, lows, chance of precipitation from The Weather Channel and Weather.com.
Detailed Forecast. Tonight. Mostly cloudy during the early evening, then gradual clearing, with a low around 56. North northwest wind around 5 mph. Saturday. Sunny, with a high near 83. Northwest wind around 5 mph. Saturday Night. Clear, with a low around 60.
- Chicago, IL
Know what's coming with AccuWeather's extended daily forecasts for DeKalb, IL. Up to 90 days of daily highs, lows, and precipitation chances.
De Kalb County. Partly cloudy late in the evening, then mostly cloudy with showers and scattered thunderstorms after midnight. Lows in the lower 70s. Southeast winds 5 to 10 mph. Chance of precipitation 80 percent. Mostly cloudy. Scattered showers, mainly in the morning. Highs in the upper 70s.
