Sullivan Weather Forecast

    • 71
    • 87

    Rain Showers

    • 69
    • 85

    Rain Showers Likely

    • 71
    • 88

    Slight Chance Thunderstorms

    • 74
    • 93

    Mostly Sunny

    • 74
    • 92

    Mostly Sunny

    • 73
    • 91

    Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

Today 20 Jul Moultrie

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

Tonight 20 Jul Moultrie

Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Lows in the lower 70s. North Winds around 5 Mph, becoming east after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sullivan Temperature Statistics

July Temperature

Mattoon / Charleston, Coles County Memorial Airport (19.3 miles)

  • Lowest 8 July, 2025

    64.7 °F

  • Average July

    77.9 °F

  • Highest 6 July, 2025

    90.6 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (19.3 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.4 °F
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