Johnson Creek Recreation Area Weather Forecast

    • 65
    • 87

    Areas Fog

    • 66
    • 84

    Becoming Sunny

    • 63
    • 84

    Mostly Sunny

    • 61
    • 82

    Partly Sunny

    • 63
    • 81

    Slight Chance Thunderstorms

    • 66
    • 84

    Partly Sunny

    • 66
    • 86

    Slight Chance Thunderstorms

Today 20 Aug Jackson

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 20 Aug Jackson

Mostly clear. Patchy fog after midnight. Lows in the mid 60s. Northeast Winds around 5 Mph this Evening, becoming light and variable.

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Johnson Creek Recreation Area Temperature Statistics

August Temperature

Southern Illinois Airport (14.9 miles)

  • Lowest 5 August, 2026

    62.6 °F

  • Average August

    80.4 °F

  • Highest 11 August, 2026

    96.7 °F

Climate (2021–2026)

Southern Illinois Airport (14.9 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    69.4 °F
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