Lake Forest Weather Forecast

    • 58
    • 76

    Increasing Clouds

    • 56
    • 72

    Rain Showers

    • 55
    • 75

    Mostly Sunny

    • 58
    • 78

    Chance Thunderstorms

    • 58
    • 79

    Chance Thunderstorms

    • 58
    • 79

    Slight Chance Thunderstorms

Today 21 Jun Summit

Mostly sunny in the Morning, then becoming partly sunny. Highs in the upper 70s. Northwest Winds around 5 Mph.

Tonight 21 Jun Summit

Clear. Lows in the mid 50s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

June Temperature

Portage County Airport (11.2 miles)

  • Lowest 1 June, 2026

    45.3 °F

  • Average June

    68.1 °F

  • Highest 10 June, 2026

    87.6 °F

Climate (2021–2026)

Portage County Airport (11.2 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59.9 °F
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