Blackburn Airport Weather Forecast

    • 46
    • 74

    Becoming Sunny

    • 56
    • 75

    Mostly Sunny

    • 60
    • 79

    Rain Showers

    • 45
    • 70

    Chance Thunderstorms

    • 43
    • 65

    Mostly Cloudy

    • 47
    • 65

    Chance Rain Showers

Today 21 Apr Dane

Warmer. Partly sunny in the morning then clearing. Highs in the mid 70s. Southwest Winds 5 to 15 Mph.

Tonight 21 Apr Dane

Clear. Lows in the mid 40s. Northwest Winds up to 5 Mph shifting to the northeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Blackburn Airport Temperature Statistics

April Temperature

Janesville-Rock County (18 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    48.4 °F

  • Highest 17 April, 2026

    78.8 °F

Climate (2021–Present)

Janesville-Rock County (18 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
Get WillyWeather+ to remove ads