Lake Forest Weather Forecast

    • 49
    • 65

    Chance Rain Showers

    • 59
    • 77

    Rain Showers

    • 44
    • 70

    Rain Showers

    • 45
    • 60

    Chance Rain Showers

    • 41
    • 60

    Chance Rain Showers

    • 39
    • 55

    Chance Rain Showers

Today 17 Oct Summit

Mostly sunny this Morning, then becoming partly cloudy. Areas of frost this morning. Highs in the mid 60s. South Winds around 5 Mph.

Tonight 17 Oct Summit

Mostly cloudy with a 20 percent chance of Showers. Not as cool with Lows in the upper 40s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

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Lake Forest Temperature Statistics

October Temperature

Portage County Airport (11.2 miles)

  • Lowest 10 October, 2025

    35.2 °F

  • Average October

    57.1 °F

  • Highest 4 October, 2025

    82.4 °F

Climate (2020–Present)

Portage County Airport (11.2 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    50.2 °F

  • Average High 2020–2025

    60.1 °F
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