Gutzmers Twin Oaks Airport Weather Forecast

    • 47
    • 73

    Mostly Sunny

    • 61
    • 74

    Mostly Cloudy

    • 63
    • 70

    Rain Showers

    • 48
    • 69

    Chance Rain Showers

    • 44
    • 63

    Partly Sunny

    • 48
    • 64

    Partly Sunny

    • 41
    • 63

    Partly Sunny

Today 28 Sep Jefferson

Sunny. Highs in the mid 70s. East Winds up to 5 Mph.

Tonight 28 Sep Jefferson

Clear until early morning then becoming partly cloudy. Lows in the upper 40s. Southeast Winds up to 5 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

    64.3 °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

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.2 °F
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