Maple Island Conservation Area Weather Forecast

    • 68
    • 93

    Thunderstorms Likely

    • 61
    • 80

    Slight Chance Rain Showers

    • 64
    • 83

    Mostly Sunny

    • 68
    • 87

    Rain Showers Likely

    • 67
    • 86

    Rain Showers

    • 62
    • 81

    Mostly Cloudy

Today 17 Jun St. Charles

Mostly sunny with a slight chance of Showers and Thunderstorms. Windy, warmer with Highs in the lower 90s. South Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest 20 to 30 Mph with Gusts up to 45 Mph this afternoon. Chance of rain 20 percent.

Tonight 17 Jun St. Charles

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Breezy with Lows in the upper 60s. Southwest Winds 20 to 25 Mph with Gusts up to 40 Mph, becoming west 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

June Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 3 June, 2026

    52.5 °F

  • Average June

    73.1 °F

  • Highest 9 June, 2026

    91.4 °F

Climate (2021–2026)

St. Louis Regional Airport (6.2 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.7 °F
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