Lake Forest Weather Forecast

    • 67
    • 88

    Rain Showers

    • 62
    • 79

    Chance Thunderstorms

    • 60
    • 76

    Slight Chance Rain Showers

    • 60
    • 80

    Mostly Sunny

    • 63
    • 84

    Mostly Cloudy

    • 64
    • 84

    Chance Rain Showers

Today 27 Jul Summit

Partly sunny. Near steady temperature in the upper 80s. Southwest Winds 5 to 10 Mph.

Tonight 27 Jul Summit

A chance of Thunderstorms. Showers with Lows in the upper 60s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

July Temperature

Portage County Airport (11.2 miles)

  • Lowest 23 July, 2026

    49.6 °F

  • Average July

    72.5 °F

  • Highest 1 July, 2026

    94.5 °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

    60.1 °F
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