Oakwood Bottoms Greentree Reservoir Interpretive Site Weather Forecast

    • 65
    • 96

    Mostly Sunny

    • 64
    • 92

    Slight Chance Thunderstorms

    • 66
    • 91

    Partly Sunny

    • 65
    • 89

    Chance Thunderstorms

    • 64
    • 84

    Chance Thunderstorms

    • 62
    • 84

    Chance Rain Showers

Today 18 Sep Jackson

Sunny, hot with Highs in the mid 90s. Calm Winds, becoming southeast around 5 Mph this afternoon.

Tonight 18 Sep Jackson

Partly cloudy. Lows in the mid 60s. Southeast Winds around 5 Mph, becoming west after midnight.

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Oakwood Bottoms Greentree Reservoir Interpretive Site Temperature Statistics

September Temperature

Southern Illinois Airport (13 miles)

  • Lowest 8 September, 2025

    41 °F

  • Average September

    70.5 °F

  • Highest 14 September, 2025

    97 °F

Climate (2020–Present)

Southern Illinois Airport (13 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.7 °F
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