Portage Weather Forecast

    • 51
    • 71

    Chance Rain Showers

    • 57
    • 69

    Rain Showers

    • 53
    • 70

    Rain Showers

    • 52
    • 64

    Chance Rain Showers

    • 50
    • 63

    Chance Rain Showers

    • 50
    • 65

    Slight Chance Rain Showers

Today 17 Sep Columbia

Mostly cloudy. A 30 percent chance of light rain Showers in the morning. Highs in the lower 70s. Northeast Winds up to 5 Mph.

Tonight 17 Sep Columbia

Partly cloudy. Lows in the lower 50s. Northeast Winds up to 5 Mph.

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Portage Temperature Statistics

September Temperature

Baraboo Wisconsin Dells Airport (15.5 miles)

  • Lowest 14 September, 2026

    39.7 °F

  • Average September

    66.6 °F

  • Highest 1 September, 2026

    85.3 °F

Climate (2021–2026)

Baraboo Wisconsin Dells Airport (15.5 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    58 °F
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