Howell Island State Wildlife Area Weather Forecast

    • 70
    • 98

    Slight Chance Thunderstorms

    • 65
    • 94

    Decreasing Clouds

    • 65
    • 93

    Mostly Sunny

    • 65
    • 93

    Slight Chance Thunderstorms

    • 64
    • 91

    Chance Thunderstorms

    • 62
    • 86

    Chance Thunderstorms

    • 59
    • 83

    Chance Thunderstorms

Today 14 Sep St. Charles

Mostly sunny with a slight chance of Showers and Thunderstorms. Hot. Near steady temperature in the mid 90s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 14 Sep St. Charles

Mostly cloudy. A slight chance of Showers and Thunderstorms late this evening. Lows in the upper 60s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Howell Island State Wildlife Area Temperature Statistics

September Temperature

St. Louis, Spirit Of St. Louis Airport (2.5 miles)

  • Lowest 8 September, 2025

    41 °F

  • Average September

    67.2 °F

  • Highest 12 September, 2025

    93.9 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (2.5 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    68.1 °F
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