Blackburn Airport Weather Forecast

    • 73
    • 91

    Chance Thunderstorms

    • 62
    • 89

    Mostly Sunny

    • 65
    • 85

    Partly Sunny

    • 68
    • 88

    Chance Thunderstorms

    • 59
    • 83

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

Today 17 Jul Dane

Warm and humid. Partly sunny. Areas of smoke in the morning. A 30 percent chance of light Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Southwest Winds up to 10 Mph. Highest heat index Readings 95 to 97 in the late morning and afternoon.

Tonight 17 Jul Dane

Mostly cloudy after midnight then becoming partly cloudy. Smoke. Near steady temperature in the upper 60s. Southeast Winds up to 5 Mph.

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Blackburn Airport Temperature Statistics

July Temperature

Janesville-Rock County (18 miles)

  • Lowest 12 July, 2026

    53.6 °F

  • Average July

    73 °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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