Sontimer Airport Weather Forecast

    • 67
    • 84

    Gradual Clearing

    • 68
    • 90

    Partly Sunny

    • 67
    • 90

    Partly Sunny

    • 71
    • 90

    Mostly Sunny

    • 67
    • 91

    Chance Thunderstorms

    • 67
    • 86

    Chance Rain Showers

Today 11 Sep St. Charles

Patchy fog this morning. Mostly cloudy. Highs in the mid 80s. East Winds around 5 Mph.

Tonight 11 Sep St. Charles

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 60s. East Winds around 5 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sontimer Airport Temperature Statistics

September Temperature

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

  • Lowest 8 September, 2026

    61 °F

  • Average September

    83.7 °F

  • Highest 5 September, 2026

    102.7 °F

Climate (2021–2026)

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    69 °F
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