Blackburn Airport Weather Forecast

    • 45
    • 72

    Mostly Cloudy

    • 41
    • 63

    Partly Sunny

    • 45
    • 61

    Mostly Cloudy

    • 47
    • 62

    Chance Rain Showers

    • 51
    • 70

    Mostly Cloudy

    • 53
    • 77

    Partly Sunny

    • 57
    • 82

    Partly Sunny

Today 19 May Dane

Mostly cloudy. Northwest Winds 10 to 15 Mph.

Tonight 19 May Dane

Much Colder. Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. Northwest Winds 5 to 15 Mph.

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Blackburn Airport Temperature Statistics

May Temperature

Janesville-Rock County (18 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    52.3 °F

  • Highest 17 May, 2026

    84.2 °F

Climate (2021–Present)

Janesville-Rock County (18 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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