Belvidere Weather Forecast

    • 54
    • 70

    Chance Thunderstorms

    • 58
    • 79

    Mostly Sunny

    • 60
    • 81

    Slight Chance Thunderstorms

    • 60
    • 82

    Slight Chance Thunderstorms

    • 55
    • 82

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

Today 18 Sep Thayer

Mostly cloudy in the morning then becoming partly cloudy. A 50 percent chance of Showers and Thunderstorms. Highs around 70. Light Winds.

Tonight 18 Sep Thayer

Partly cloudy. Lows in the mid 50s. Light Winds.

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Belvidere Temperature Statistics

September Temperature

Hebron, Hebron Municipal Airport (6.8 miles)

  • Lowest 6 September, 2025

    45 °F

  • Average September

    68.3 °F

  • Highest 12 September, 2025

    95.2 °F

Climate (2020–Present)

Hebron, Hebron Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    66.3 °F
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