Lake Forest Weather Forecast

    • 63
    • 86

    Chance Thunderstorms

    • 68
    • 86

    Chance Thunderstorms

    • 68
    • 85

    Rain Showers

    • 64
    • 83

    Rain Showers Likely

    • 62
    • 81

    Chance Thunderstorms

    • 60
    • 80

    Chance Thunderstorms

Today 8 Aug Summit

Partly cloudy with a chance of Showers and Thunderstorms. Highs in the mid 80s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 8 Aug Summit

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

August Temperature

Portage County Airport (11.2 miles)

  • Lowest 4 August, 2026

    50.4 °F

  • Average August

    70.9 °F

  • Highest 5 August, 2026

    87.6 °F

Climate (2021–2026)

Portage County Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    60.1 °F
Get WillyWeather+ to remove ads