Lake Kegonsa State Park Weather Forecast

    • 49
    • 64

    Mostly Cloudy

    • 46
    • 63

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 49
    • 66

    Mostly Cloudy

    • 48
    • 67

    Mostly Cloudy

    • 51
    • 67

    Mostly Cloudy

Today 21 Sep Dane

Mostly cloudy. Slight chance of Sprinkles late in the afternoon. Highs in the lower 60s. Northeast Winds 10 to 15 Mph.

Tonight 21 Sep Dane

Mostly cloudy. Slight chance of Sprinkles through the night. Lows in the upper 40s. Northeast Winds 5 to 15 Mph.

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Lake Kegonsa State Park Temperature Statistics

September Temperature

Madison, Dane County Regional-Truax Field (12.4 miles)

  • Lowest 14 September, 2026

    41.6 °F
  • Average September

    68.9 °F
  • Highest 2 September, 2026

    88.6 °F

Climate (2021–2026)

Madison, Dane County Regional-Truax Field (12.4 miles)

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  • Average Low 2021–2026

    39.9 °F
  • Average 2021–2026

    49.8 °F
  • Average High 2021–2026

    59.1 °F
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