Janesville Weather Forecast

    • 21
    • 30

    Snow

    • 14
    • 29

    Snow

    • 1
    • 19

    Mostly Cloudy

    • 4
    • 14

    Mostly Cloudy

    • 13
    • 22

    Mostly Cloudy

    • 3
    • 27

    Mostly Cloudy

Today 28 Nov Bremer

Partly cloudy Late, then becoming partly sunny. A slight chance of snow this afternoon. Highs in the upper 20s. Northwest Winds 5 to 10 Mph, becoming west this afternoon. Chance of snow 20 percent.

Tonight 28 Nov Bremer

Snow. Snow accumulation of 4 to 6 Inches. Lows in the lower 20s. East Winds 10 to 15 Mph. Chance of snow near 100 percent.

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Janesville Temperature Statistics

November Temperature

Waterloo, Waterloo Municipal Airport (6.8 miles)

  • Lowest 10 November, 2025

    19.9 °F

  • Average November

    42.3 °F

  • Highest 14 November, 2025

    72 °F

Climate (2020–Present)

Waterloo, Waterloo Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    40.3 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    61.8 °F
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