Southern Illinois Airport Weather Forecast

    • 73
    • 94

    Chance Thunderstorms

    • 73
    • 90

    Chance Thunderstorms

    • 73
    • 89

    Thunderstorms Likely

    • 71
    • 89

    Thunderstorms Likely

    • 68
    • 88

    Slight Chance Thunderstorms

    • 69
    • 89

    Mostly Sunny

Today 27 Jun Jackson

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 27 Jun Jackson

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Southern Illinois Airport Temperature Statistics

June Temperature

Southern Illinois Airport (0 miles)

  • Lowest 2 June, 2025

    59.6 °F

  • Average June

    76.8 °F

  • Highest 23 June, 2025

    94.6 °F

Climate (2020–Present)

Southern Illinois Airport (0 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    68.6 °F
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