Janesville Weather Forecast

    • 21
    • 34

    Rain/Snow

    • 18
    • 27

    Cloudy

    • 20
    • 30

    Snow

    • 13
    • 24

    Mostly Cloudy

    • 16
    • 33

    Mostly Cloudy

    • 10
    • 24

    Mostly Cloudy

    • 18
    • 31

    Mostly Cloudy

Today 29 Nov Cumberland

Snow, a slight chance of rain and Thunderstorms. Snow accumulation of 1 to 3 Inches. Near steady temperature in the lower 30s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation near 100 percent.

Tonight 29 Nov Cumberland

Cloudy. A chance of rain late this Evening, then a slight chance of freezing rain. Lows in the lower 20s. Southwest Winds 15 to 20 Mph, becoming west. Gusts up to 35 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Janesville Temperature Statistics

November Temperature

Mattoon / Charleston, Coles County Memorial Airport (6.8 miles)

  • Lowest 11 November, 2025

    23 °F

  • Average November

    46.8 °F

  • Highest 15 November, 2025

    75.9 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (6.8 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    64.6 °F
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