Sycamore Weather Forecast

    • 62
    • 78

    Thunderstorms Likely

    • 56
    • 78

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 62
    • 77

    Chance Rain Showers

    • 61
    • 80

    Slight Chance Thunderstorms

Today 21 Aug De Kalb

Mostly cloudy. A chance of Showers and Thunderstorms in the late morning and early afternoon. Showers and Thunderstorms likely late. Highs in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 60 percent.

Tonight 21 Aug De Kalb

Mostly cloudy in the Evening, then becoming partly cloudy. Showers and Thunderstorms likely early in the Evening, then a chance of Showers and Thunderstorms late in the evening. Lows in the lower 60s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of precipitation 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sycamore Temperature Statistics

August Temperature

De Kalb Taylor Municipal Airport (3.7 miles)

  • Lowest 3 August, 2026

    58.6 °F

  • Average August

    71.7 °F

  • Highest 10 August, 2026

    85.1 °F

Climate (2021–2026)

De Kalb Taylor Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.3 °F
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