South Park Weather Forecast

    • 61
    • 86

    Chance Rain Showers

    • 60
    • 80

    Rain Showers Likely

    • 60
    • 77

    Chance Thunderstorms

    • 61
    • 78

    Chance Thunderstorms

    • 58
    • 79

    Chance Rain Showers

    • 55
    • 76

    Partly Sunny

Today 18 Sep Sauk

Partly sunny until late afternoon then clearing. A 20 percent chance of light Showers late in the afternoon. Highs in the mid 80s. Southeast Winds up to 5 Mph.

Tonight 18 Sep Sauk

Partly cloudy with chance of light Showers and slight chance of Thunderstorms until early Morning, then mostly cloudy with slight chance of light Showers early in the morning. Patchy fog early in the morning. Lows in the lower 60s. East Winds up to 10 Mph. Chance of precipitation 30 percent.

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South Park Temperature Statistics

September Temperature

Reedsburg Municipal Airport (0.6 miles)

  • Lowest 8 September, 2025

    38.8 °F

  • Average September

    62.7 °F

  • Highest 15 September, 2025

    86.7 °F

Climate (2020–Present)

Reedsburg Municipal Airport (0.6 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    57.5 °F
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