Webster Groves Weather Forecast

    • 25
    • 58

    Rain Showers

    • 33
    • 41

    Mostly Sunny

    • 28
    • 57

    Partly Sunny

    • 30
    • 44

    Partly Sunny

    • 42
    • 47

    Mostly Cloudy

    • 48
    • 60

    Mostly Cloudy

Today 18 Dec St. Louis

Rain. Highs in the mid 50s. Temperature falling into the mid 40s this afternoon. South Winds 15 to 20 Mph, becoming west this afternoon. Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 18 Dec St. Louis

Mostly cloudy in the Evening, then clearing. Much cooler with Lows in the mid 20s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Webster Groves Temperature Statistics

December Temperature

St. Louis Lambert International Airport (10.6 miles)

  • Lowest 14 December, 2025

    7 °F

  • Average December

    30.2 °F

  • Highest 16 December, 2025

    57 °F

Climate (2020–Present)

St. Louis Lambert International Airport (10.6 miles)

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  • Average Low 2020–2025

    50.5 °F

  • Average 2020–2025

    59.8 °F

  • Average High 2020–2025

    69.1 °F
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