Sullivan Weather Forecast

    • 73
    • 88

    Slight Chance Thunderstorms

    • 73
    • 92

    Partly Sunny

    • 73
    • 93

    Sunny

    • 73
    • 93

    Mostly Sunny

    • 73
    • 92

    Slight Chance Thunderstorms

    • 72
    • 91

    Chance Thunderstorms

Today 28 Jun Moultrie

Areas of fog in the morning. Mostly sunny. Humid with Highs in the upper 80s. South Winds 5 to 10 Mph. Heat index Values up to 100 in the afternoon.

Tonight 28 Jun Moultrie

Partly cloudy in the Evening, then becoming mostly clear. Humid with Lows in the lower 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sullivan Temperature Statistics

June Temperature

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

  • Lowest 23 June, 2026

    53.7 °F

  • Average June

    71.7 °F

  • Highest 9 June, 2026

    89.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    64.9 °F
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