Lake Forest Weather Forecast

    • 67
    • 85

    Rain Showers

    • 71
    • 88

    Rain Showers Likely

    • 69
    • 91

    Rain Showers

    • 59
    • 84

    Chance Thunderstorms

    • 62
    • 85

    Chance Rain Showers

    • 57
    • 81

    Chance Thunderstorms

Today 9 Jun Summit

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Humid with Highs in the mid 80s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 9 Jun Summit

Showers with a chance of Thunderstorms. Humid with Lows in the upper 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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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

    65.5 °F

  • Highest 5 June, 2026

    82.9 °F

Climate (2021–Present)

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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