Lake Forest Weather Forecast

    • 71
    • 95

    Chance Thunderstorms

    • 68
    • 90

    Rain Showers

    • 67
    • 88

    Rain Showers

    • 66
    • 85

    Rain Showers Likely

    • 65
    • 84

    Chance Rain Showers

    • 65
    • 86

    Slight Chance Rain Showers

Today 3 Jul Summit

Sunny this Morning, then partly cloudy with a chance of Thunderstorms with a slight chance of Showers this afternoon. Hot with Highs in the mid 90s. West Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 103.

Tonight 3 Jul Summit

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. West Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 100 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

July Temperature

Portage County Airport (11.2 miles)

  • Lowest 1 July, 2026

    73.9 °F

  • Average July

    82.3 °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 °F
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