Lake Forest Weather Forecast

    • 45
    • 76

    Chance Rain Showers

    • 39
    • 62

    Partly Sunny

    • 47
    • 63

    Mostly Cloudy

    • 49
    • 69

    Chance Rain Showers

    • 51
    • 69

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

    • 55
    • 72

    Chance Rain Showers

Today 29 Oct Summit

Sunny. Near steady temperature in the mid 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 29 Oct Summit

Partly cloudy. A chance of Showers, mainly in the evening. Lows in the mid 40s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

October Temperature

Portage County Airport (11.2 miles)

  • Lowest 18 October, 2026

    29.8 °F

  • Average October

    54.2 °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

    40.4 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    60 °F
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