Chesterfield Weather Forecast

    • 77
    • 93

    Mostly Sunny

    • 79
    • 97

    Hot

    • 78
    • 97

    Hot

    • 76
    • 95

    Rain Showers Likely

    • 72
    • 89

    Rain Showers Likely

    • 73
    • 87

    Chance Rain Showers

    • 73
    • 89

    Chance Rain Showers

Today 9 Aug St. Louis

Mostly sunny. Near steady temperature around 90. South Winds 10 to 15 Mph. Heat index Values up to 103.

Tonight 9 Aug St. Louis

Mostly clear. Lows in the mid 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Heat index Values up to 102 early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chesterfield Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    62.7 °F

  • Average August

    75.2 °F

  • Highest 7 August, 2026

    90 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    68.9 °F
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