Foster Weather Forecast

    • 61
    • 81

    Chance Thunderstorms

    • 60
    • 83

    Partly Sunny

    • 63
    • 82

    Rain Showers Likely

    • 63
    • 78

    Rain Showers Likely

    • 59
    • 80

    Chance Rain Showers

    • 55
    • 78

    Chance Rain Showers

Today 18 Sep Bates

Partly sunny late this Morning, then becoming mostly cloudy. A chance of Showers. A chance of Thunderstorms this afternoon. Not as warm with Highs in the upper 70s. Northeast Winds around 5 Mph, becoming southwest this afternoon. Chance of rain 50 percent.

Tonight 18 Sep Bates

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Lows in the lower 60s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

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Foster Temperature Statistics

September Temperature

Clinton, MO (46 miles)

  • Lowest 6 September, 2025

    44.6 °F

  • Average September

    71.7 °F

  • Highest 12 September, 2025

    96.8 °F

Climate (2020–Present)

Clinton, MO (46 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    68 °F
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