Lake Forest Weather Forecast

    • 38
    • 69

    Mostly Sunny

    • 43
    • 68

    Mostly Sunny

    • 41
    • 68

    Mostly Sunny

    • 37
    • 64

    Mostly Sunny

    • 40
    • 64

    Mostly Sunny

    • 46
    • 69

    Partly Sunny

Today 20 Oct Summit

Sunny. Highs in the upper 60s. Northeast Winds around 5 Mph.

Tonight 20 Oct Summit

Mostly clear. Patchy fog after midnight. Lows in the upper 30s. Northeast Winds around 5 Mph.

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Lake Forest Temperature Statistics

October Temperature

Portage County Airport (11.2 miles)

  • Lowest 18 October, 2026

    29.8 °F

  • Average October

    56.7 °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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