Cheltenham Weather Forecast

    • 25
    • 57

    Chance Rain

    • 33
    • 40

    Mostly Sunny

    • 28
    • 57

    Partly Sunny

    • 30
    • 44

    Partly Sunny

    • 42
    • 47

    Mostly Cloudy

    • 48
    • 60

    Mostly Cloudy

Today 18 Dec St. Louis City

Rain with a slight chance of Thunderstorms Early, then rain. Highs in the upper 50s. Temperature falling into the mid 40s. South Winds around 20 Mph, becoming west. Gusts up to 45 Mph. Chance of rain near 100 percent.

Tonight 18 Dec St. Louis City

Mostly cloudy with a chance of Flurries in the Evening, then partly cloudy after midnight. Breezy and much cooler with Lows in the mid 20s. West Winds 15 to 25 Mph with Gusts up to 40 Mph.

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Cheltenham Temperature Statistics

December Temperature

St. Louis Downtown Airport (8.1 miles)

  • Lowest 14 December, 2025

    7 °F

  • Average December

    29.9 °F

  • Highest 16 December, 2025

    55 °F

Climate (2020–Present)

St. Louis Downtown Airport (8.1 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.6 °F
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