Chesterfield Weather Forecast

    • 78
    • 99

    Hot

    • 80
    • 100

    Hot

    • 80
    • 100

    Hot

    • 79
    • 100

    Hot

    • 76
    • 98

    Hot

    • 72
    • 95

    Mostly Sunny

Today 31 Aug St. Louis

Sunny, hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph.

Tonight 31 Aug St. Louis

Clear. Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 101 early in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Chesterfield Temperature Statistics

August Temperature

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

  • Lowest 24 August, 2026

    57 °F

  • Average August

    77.9 °F

  • Highest 11 August, 2026

    95.6 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    68.9 °F
Get WillyWeather+ to remove ads