Janesville Weather Forecast

    • 39
    • 76

    Sunny

    • 30
    • 55

    Mostly Sunny

    • 42
    • 55

    Rain Likely

    • 42
    • 60

    Chance Rain

    • 46
    • 58

    Rain Likely

    • 50
    • 61

    Rain

    • 41
    • 61

    Chance Rain

Today 15 Nov Cumberland

Mostly sunny. Highs in the mid 70s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 15 Nov Cumberland

Mostly clear. Much cooler with Lows in the upper 30s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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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

    46.9 °F

  • Highest 5 November, 2025

    70 °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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