Lake Forest Weather Forecast

    • 32
    • 52

    Mostly Sunny

    • 36
    • 61

    Sunny

    • 37
    • 66

    Mostly Sunny

    • 38
    • 67

    Mostly Sunny

    • 40
    • 68

    Mostly Sunny

    • 43
    • 67

    Mostly Sunny

Today 17 Oct Summit

Sunny, cooler. Near steady temperature in the lower 50s. North Winds 5 to 10 Mph.

Tonight 17 Oct Summit

Clear. Areas of frost after midnight. Lows in the lower 30s. Northwest Winds around 5 Mph, becoming south after midnight.

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Lake Forest Temperature Statistics

October Temperature

Portage County Airport (11.2 miles)

  • Lowest 6 October, 2026

    35.2 °F

  • Average October

    58.3 °F

  • Highest 13 October, 2026

    83.3 °F

Climate (2021–2026)

Portage County Airport (11.2 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    60 °F
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