St Charles Weather Forecast

    • 38
    • 68

    Becoming Sunny

    • 39
    • 68

    Mostly Sunny

    • 41
    • 71

    Mostly Sunny

    • 45
    • 74

    Partly Sunny

    • 41
    • 69

    Chance Rain Showers

    • 41
    • 68

    Slight Chance Thunderstorms

Today 16 Sep Bear Lake Valley

Sunny. Highs 64 to 71.

Tonight 16 Sep Bear Lake Valley

Mostly clear. Lows 35 to 45.

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St Charles Temperature Statistics

September Temperature

Logan-Cache Airport (32.3 miles)

  • Lowest 14 September, 2025

    41 °F

  • Average September

    68.8 °F

  • Highest 2 September, 2025

    91 °F

Climate (2020–Present)

Logan-Cache Airport (32.3 miles)

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  • Average Low 2020–2025

    35 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    61.3 °F
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