Black Walnut Weather Forecast

    • 30
    • 37

    Increasing Clouds

    • 24
    • 37

    Snow/Sleet

    • 15
    • 29

    Mostly Cloudy

    • 17
    • 27

    Mostly Cloudy

    • 20
    • 32

    Partly Sunny

    • 24
    • 39

    Mostly Cloudy

Today 28 Nov St. Charles

Mostly sunny. Highs in the upper 30s. Northwest Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 28 Nov St. Charles

Cloudy. A slight chance of snow in the Evening, then snow after midnight. Snow accumulation around an inch. Near steady temperature in the lower 30s. Southeast Winds around 5 Mph, increasing to 10 to 15 Mph after midnight. Chance of snow 90 percent.

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  • Temperature Forecast NOAA

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Black Walnut Temperature Statistics

November Temperature

St. Charles, St. Charles County Smartt Airport (5 miles)

  • Lowest 10 November, 2025

    25 °F

  • Average November

    50.5 °F

  • Highest 14 November, 2025

    80.1 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (5 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.5 °F
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