Gutzmers Twin Oaks Airport Weather Forecast

    • 50
    • 63

    Mostly Cloudy

    • 46
    • 60

    Partly Sunny

    • 48
    • 64

    Partly Sunny

    • 48
    • 65

    Mostly Cloudy

    • 46
    • 65

    Partly Sunny

    • 49
    • 64

    Mostly Cloudy

    • 52
    • 67

    Mostly Cloudy

Today 21 Sep Jefferson

Cloudy. Highs in the lower 60s. Northeast Winds 10 to 15 Mph.

Tonight 21 Sep Jefferson

Mostly cloudy. Lows around 50. Northeast Winds 5 to 15 Mph.

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Gutzmers Twin Oaks Airport Temperature Statistics

September Temperature

Janesville-Rock County (21.1 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    67.1 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (21.1 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.2 °F
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