Blackburn Airport Weather Forecast

    • 72
    • 91

    Chance Thunderstorms

    • 68
    • 92

    Chance Thunderstorms

    • 61
    • 84

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 64
    • 86

    Partly Sunny

    • 65
    • 85

    Slight Chance Thunderstorms

Today 26 Jul Dane

Very warm and humid. Partly sunny. A 20 percent chance of light Showers in the morning. Patchy fog in the morning. Highs in the lower 90s. Southwest Winds up to 10 Mph. Highest heat index Readings 100 to 105 in the late morning and afternoon.

Tonight 26 Jul Dane

Partly cloudy. A 50 percent chance of light Showers and Thunderstorms in the late evening and overnight. Lows in the lower 70s. Southwest Winds up to 10 Mph. Highest heat index Readings 97 to 102 in the evening.

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Blackburn Airport Temperature Statistics

July Temperature

Janesville-Rock County (18 miles)

  • Lowest 22 July, 2026

    50 °F

  • Average July

    74.3 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Janesville-Rock County (18 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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