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City of DeKalb, IllinoisDeKalb, IL 7-Day Night Weather Forecast
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DeKalb, IL Weather Forecast
DeKalb, IL Weather Forecast Date: 631 AM CST Fri Nov 06 2026
The area/counties/county of: De Kalb, including the cities of: Dekalb and Sycamore.or toggle through each period.
Today... Mostly sunny in the morning, then becoming mostly cloudy. Highs in the mid 40s. North winds 10 to 15 mph.
Tonight... Partly cloudy in the evening, then clearing. Lows in the upper 20s. Northwest winds around 5 mph.
Saturday... Partly cloudy. Highs around 50. West winds around 5 mph.
Saturday Night... Mostly clear. Lows in the mid 30s. Southwest winds 5 to 10 mph.
Sunday... Mostly sunny. Highs in the upper 50s. West winds 5 to 10 mph.
Sunday Night... Clear. Lows in the mid 30s.
Monday... Mostly sunny. Highs in the lower 60s.
Monday Night... Clear. Lows in the lower 40s.
Tuesday... Sunny. Highs around 60.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.
Veterans Day... Partly cloudy. Highs in the upper 50s.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s.
POP = Probability of Precipitation
DeKalb Radar Loop
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