Sullivan Weather Forecast

    • 67
    • 83

    Rain Showers Likely

    • 68
    • 86

    Chance Thunderstorms

    • 67
    • 88

    Chance Rain Showers

    • 66
    • 90

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 67
    • 92

    Chance Rain Showers

    • 68
    • 91

    Chance Rain Showers

Today 10 Sep Union

Mostly cloudy with a chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 10 Sep Union

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Patchy fog after midnight. Lows in the upper 60s. Northeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 70 percent.

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Sullivan Temperature Statistics

September Temperature

Marion-crittenden County Airport (14.3 miles)

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Climate (2021–2022)

Marion-crittenden County Airport (14.3 miles)

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  • Average Low 2021–2022

    48.2 °F

  • Average 2021–2022

    58.3 °F

  • Average High 2021–2022

    69.2 °F
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