Cheltenham Weather Forecast

    • 71
    • 82

    Rain Showers

    • 58
    • 86

    Rain Showers

    • 53
    • 70

    Mostly Cloudy

    • 58
    • 75

    Chance Rain Showers

    • 61
    • 77

    Chance Thunderstorms

    • 63
    • 83

    Slight Chance Thunderstorms

Today 18 May St. Louis City

Showers. A chance of Thunderstorms this Morning, then Thunderstorms likely this afternoon. Near steady temperature in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 18 May St. Louis City

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Lows around 70. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cheltenham Temperature Statistics

May Temperature

St. Louis Downtown Airport (8.1 miles)

  • Lowest 7 May, 2026

    39.7 °F

  • Average May

    62.2 °F

  • Highest 15 May, 2026

    84.7 °F

Climate (2021–Present)

St. Louis Downtown Airport (8.1 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69.3 °F
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