Portage Des Sioux Weather Forecast

    • 38
    • 73

    Mostly Sunny

    • 28
    • 64

    Partly Sunny

    • 31
    • 46

    Rain/Snow

    • 35
    • 43

    Rain Likely

    • 40
    • 52

    Rain Likely

    • 49
    • 61

    Rain Likely

Today 27 Feb St. Charles

Sunny. Not as cool with Highs in the lower 70s. Southwest Winds 5 to 10 Mph, increasing to 15 to 20 Mph this afternoon.

Tonight 27 Feb St. Charles

Mostly clear. Lows around 40. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight.

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Portage Des Sioux Temperature Statistics

February Temperature

St. Charles, St. Charles County Smartt Airport (4.3 miles)

  • Lowest 1 February, 2026

    -5.4 °F

  • Average February

    37.8 °F

  • Highest 18 February, 2026

    72.6 °F

Climate (2021–Present)

St. Charles, St. Charles County Smartt Airport (4.3 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    68.7 °F
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