Blackburn Airport Weather Forecast

    • 61
    • 71

    Chance Rain Showers

    • 59
    • 76

    Rain Showers Likely

    • 61
    • 74

    Rain Showers

    • 61
    • 77

    Chance Thunderstorms

    • 56
    • 69

    Chance Rain Showers

    • 53
    • 70

    Slight Chance Rain Showers

Today 16 Sep Dane

Partly sunny. A 20 percent chance of light rain Showers late in the afternoon. Highs in the lower 70s. East Winds 5 to 10 Mph.

Tonight 16 Sep Dane

Mostly cloudy. Chance of light rain Showers and slight chance of Thunderstorms in the late evening and overnight. Lows around 60. East Winds up to 5 Mph. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Blackburn Airport Temperature Statistics

September Temperature

Janesville-Rock County (18 miles)

  • Lowest 13 September, 2026

    50 °F

  • Average September

    69.2 °F

  • Highest 1 September, 2026

    91.4 °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

    60.3 °F
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