Chesterfield Weather Forecast

    • 65
    • 85

    Rain Showers

    • 71
    • 92

    Slight Chance Thunderstorms

    • 70
    • 91

    Chance Thunderstorms

    • 59
    • 81

    Thunderstorms Likely

    • 54
    • 72

    Slight Chance Rain Showers

    • 56
    • 75

    Slight Chance Thunderstorms

Today 16 May St. Louis

Mostly cloudy with a chance of Thunderstorms. Showers, mainly in the morning. Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 16 May St. Louis

Mostly cloudy with a chance of Showers and Thunderstorms. Not as cool. Near steady temperature in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chesterfield Temperature Statistics

May Temperature

St. Louis, Spirit Of St. Louis Airport (3.7 miles)

  • Lowest 7 May, 2026

    36.6 °F

  • Average May

    59 °F

  • Highest 12 May, 2026

    82.7 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (3.7 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.8 °F
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