Blackburn Airport Weather Forecast

    • 49
    • 73

    Mostly Sunny

    • 60
    • 73

    Mostly Cloudy

    • 62
    • 71

    Rain Showers Likely

    • 49
    • 69

    Chance Rain Showers

    • 45
    • 64

    Slight Chance Rain Showers

    • 48
    • 65

    Partly Sunny

Today 28 Sep Dane

Sunny. Patchy fog in the morning. Highs in the mid 70s. Calm Winds becoming east up to 5 Mph in the afternoon.

Tonight 28 Sep Dane

Clear through around midnight then becoming partly cloudy. Lows around 50. Southeast Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Blackburn Airport Temperature Statistics

September Temperature

Janesville-Rock County (18 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    64.8 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (18 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.2 °F
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