Lake Forest Weather Forecast

    • 63
    • 89

    Rain Showers

    • 56
    • 79

    Mostly Sunny

    • 65
    • 83

    Rain Showers Likely

    • 62
    • 84

    Rain Showers

    • 56
    • 73

    Slight Chance Thunderstorms

    • 56
    • 78

    Mostly Sunny

Today 18 Jul Summit

Partly sunny late this morning. A chance of Showers and Thunderstorms late this Morning, then Showers with Thunderstorms likely this afternoon. Highs in the upper 80s. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

Tonight 18 Jul Summit

Showers with Thunderstorms likely in the Evening, then partly cloudy after midnight. Humid with Lows in the lower 60s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph, becoming north after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

July Temperature

Portage County Airport (11.2 miles)

  • Lowest 14 July, 2026

    60.8 °F

  • Average July

    75.5 °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

    50.1 °F

  • Average High 2021–2026

    60.1 °F
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