Blackburn Airport Weather Forecast

    • 59
    • 72

    Rain Showers

    • 52
    • 66

    Slight Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

    • 46
    • 62

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 50
    • 68

    Partly Sunny

Today 19 Sep Dane

Showers and slight chance of Thunderstorms in the Morning, then Showers and chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the morning. Highs in the lower 70s. Southeast Winds 5 to 15 Mph. Chance of precipitation near 100 percent.

Tonight 19 Sep Dane

Cloudy. Rain Showers likely and chance of Thunderstorms through around Midnight, then chance of rain Showers after midnight. Lows in the upper 50s. Northeast Winds 5 to 15 Mph. Chance of precipitation 70 percent.

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Blackburn Airport Temperature Statistics

September Temperature

Janesville-Rock County (18 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    67.8 °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

    60.2 °F
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