Chesterfield Weather Forecast

    • 64
    • 79

    Thunderstorms

    • 60
    • 77

    Mostly Cloudy

    • 63
    • 82

    Chance Thunderstorms

    • 65
    • 85

    Slight Chance Thunderstorms

    • 64
    • 85

    Chance Thunderstorms

    • 68
    • 85

    Chance Thunderstorms

Today 21 Jun St. Louis

Cloudy. Scattered Showers and Thunderstorms this Morning, then Showers and Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible this afternoon. Highs in the lower 80s. Southeast Winds 10 to 15 Mph, becoming south this afternoon. Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 21 Jun St. Louis

Cloudy. Numerous Showers and Thunderstorms in the Evening, then isolated Showers after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the lower 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight. Chance of rain 70 percent.

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Chesterfield Temperature Statistics

June Temperature

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

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    74.4 °F

  • Highest 9 June, 2026

    93.7 °F

Climate (2021–2026)

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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