Twin Lakes Weather Forecast

    • 57
    • 82

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

    • 60
    • 82

    Partly Sunny

    • 61
    • 85

    Slight Chance Thunderstorms

    • 60
    • 80

    Chance Rain Showers

    • 58
    • 78

    Chance Rain Showers

Today 18 Sep Portage

Patchy fog this morning. Mostly sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph.

Tonight 18 Sep Portage

Clear. Lows in the upper 50s. North Winds around 5 Mph this Evening, becoming light and variable.

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Twin Lakes Temperature Statistics

September Temperature

Portage County Airport (4.3 miles)

  • Lowest 8 September, 2025

    37.8 °F

  • Average September

    61.3 °F

  • Highest 16 September, 2025

    84.6 °F

Climate (2020–Present)

Portage County Airport (4.3 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    60 °F
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