Osceola Weather Forecast

    • 66
    • 94

    Thunderstorms

    • 65
    • 90

    Thunderstorms

    • 65
    • 91

    Chance Rain Showers

    • 63
    • 84

    Rain Showers Likely

    • 62
    • 81

    Chance Thunderstorms

    • 62
    • 79

    Chance Rain Showers

    • 62
    • 81

    Slight Chance Thunderstorms

Today 15 Sep St. Clair

Partly sunny with isolated Showers and Thunderstorms. Hot. Near steady temperature around 90. South Winds around 5 Mph. Chance of rain 20 percent.

Tonight 15 Sep St. Clair

Mostly cloudy. Isolated Showers and Thunderstorms in the evening. Humid with Lows in the mid 60s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Osceola Temperature Statistics

September Temperature

Clinton, MO (21.1 miles)

  • Lowest 6 September, 2025

    44.6 °F

  • Average September

    70.1 °F

  • Highest 12 September, 2025

    96.8 °F

Climate (2020–Present)

Clinton, MO (21.1 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    67.9 °F
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