Southern Illinois Airport Weather Forecast

    • 63
    • 79

    Rain Showers

    • 42
    • 73

    Rain Showers

    • 50
    • 66

    Mostly Sunny

    • 61
    • 76

    Rain Showers Likely

    • 60
    • 77

    Rain Showers

    • 39
    • 70

    Rain Showers Likely

Today 6 Mar Jackson

Mostly sunny. Highs in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 6 Mar Jackson

Mostly cloudy. Showers likely with a chance of Thunderstorms after midnight. Lows in the lower 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Real-Time

Southern Illinois Airport Temperature Statistics

March Temperature

Southern Illinois Airport (0 miles)

  • Lowest 1 March, 2026

    30.2 °F

  • Average March

    45.4 °F

  • Highest 3 March, 2026

    71.1 °F

Climate (2021–Present)

Southern Illinois Airport (0 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69 °F
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