McMaster Woods Nature Preserve Weather Forecast

    • 71
    • 97

    Slight Chance Thunderstorms

    • 72
    • 94

    Slight Chance Thunderstorms

    • 71
    • 95

    Slight Chance Thunderstorms

    • 66
    • 89

    Rain Showers Likely

    • 61
    • 81

    Chance Rain Showers

    • 58
    • 77

    Partly Sunny

Today 17 Sep Greene

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the mid 90s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 105 this afternoon.

Tonight 17 Sep Greene

Mostly clear with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows around 70. West Winds around 5 Mph, becoming northeast after midnight. Chance of rain 20 percent. Heat index Values up to 101 early in the evening.

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  • Temperature Real-Time

McMaster Woods Nature Preserve Temperature Statistics

September Temperature

St. Charles, St. Charles County Smartt Airport (18 miles)

  • Lowest 14 September, 2026

    61 °F

  • Average September

    80.9 °F

  • Highest 2 September, 2026

    101.6 °F

Climate (2021–2026)

St. Charles, St. Charles County Smartt Airport (18 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    69 °F
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