Femme Osage Weather Forecast

    • 62
    • 92

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 65
    • 92

    Chance Thunderstorms

    • 63
    • 81

    Rain Showers Likely

    • 64
    • 82

    Chance Rain Showers

    • 66
    • 84

    Chance Rain Showers

Today 16 Sep St. Charles

Sunny. Near steady temperature in the lower 90s. Northeast Winds around 5 Mph with Gusts up to 20 Mph.

Tonight 16 Sep St. Charles

Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.

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Femme Osage Temperature Statistics

September Temperature

Washington Regional Airport (4.3 miles)

  • Lowest 8 September, 2025

    42.8 °F

  • Average September

    69.1 °F

  • Highest 14 September, 2025

    98.6 °F

Climate (2020–Present)

Washington Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    68.7 °F
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