Koch Airport Weather Forecast

    • 36
    • 52

    Mostly Cloudy

    • 49
    • 68

    Mostly Cloudy

    • 29
    • 70

    Chance Rain Showers

    • 25
    • 44

    Mostly Sunny

    • 34
    • 51

    Partly Sunny

    • 39
    • 58

    Partly Sunny

Today 24 Mar Winnebago

Mostly cloudy. Highs in the lower 50s. South Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph in the afternoon.

Tonight 24 Mar Winnebago

Partly cloudy. Lows in the mid 30s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Koch Airport Temperature Statistics

March Temperature

Janesville-Rock County (13.7 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    38 °F

  • Highest 21 March, 2026

    77 °F

Climate (2021–Present)

Janesville-Rock County (13.7 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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