Big Hill Park Weather Forecast

    • -1
    • 15

    Increasing Clouds

    • 18
    • 26

    Chance Wintry Mix

    • 11
    • 25

    Snow Likely

    • -4
    • 20

    Chance Snow

    • 13
    • 20

    Snow Likely

    • 18
    • 29

    Snow Likely

    • 6
    • 31

    Chance Snow

Today 4 Dec Rock

Sunny. South Winds around 5 Mph.

Tonight 4 Dec Rock

Mostly clear until early morning then becoming mostly cloudy. Lows around 1 below. South Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Hill Park Temperature Statistics

December Temperature

Janesville-Rock County (4.3 miles)

  • Lowest 1 December, 2025

    5 °F

  • Average December

    18.9 °F

  • Highest 1 December, 2025

    28.4 °F

Climate (2020–Present)

Janesville-Rock County (4.3 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.3 °F
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