Coal City Weather Forecast

    • 28
    • 45

    Partly Sunny

    • 30
    • 52

    Mostly Sunny

    • 36
    • 54

    Slight Chance Rain

    • 32
    • 55

    Partly Sunny

    • 40
    • 56

    Mostly Cloudy

    • 49
    • 59

    Mostly Cloudy

Today 12 Feb Grundy

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the mid 40s. Light and variable Winds, becoming southeast around 5 Mph in the afternoon.

Tonight 12 Feb Grundy

Mostly clear. Lows in the upper 20s. South Winds around 5 Mph.

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Coal City Temperature Statistics

February Temperature

Joliet Regional Airport (16.8 miles)

  • Lowest 1 February, 2026

    1.4 °F

  • Average February

    25.9 °F

  • Highest 9 February, 2026

    41.9 °F

Climate (2021–Present)

Joliet Regional Airport (16.8 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.1 °F
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