Janesville Weather Forecast

    • 32
    • 53

    Increasing Clouds

    • 41
    • 50

    Rain

    • 36
    • 54

    Slight Chance Rain

    • 40
    • 57

    Mostly Cloudy

    • 51
    • 59

    Mostly Cloudy

    • 44
    • 66

    Chance Rain

Today 13 Feb Cumberland

Sunny. Highs in the mid 50s. South Winds 10 to 15 Mph.

Tonight 13 Feb Cumberland

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Janesville Temperature Statistics

February Temperature

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

  • Lowest 1 February, 2026

    2.6 °F

  • Average February

    26 °F

  • Highest 10 February, 2026

    59 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    64.6 °F
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