De Soto Weather Forecast

    • 76
    • 92

    Mostly Sunny

    • 69
    • 96

    Slight Chance Thunderstorms

    • 62
    • 83

    Partly Sunny

    • 62
    • 81

    Partly Sunny

    • 65
    • 82

    Slight Chance Thunderstorms

    • 69
    • 88

    Mostly Sunny

    • 73
    • 93

    Mostly Sunny

Today 20 Jul Jackson

Sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 90s. Calm Winds. Chance of rain 20 percent.

Tonight 20 Jul Jackson

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 70s. South Winds around 5 Mph.

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De Soto Temperature Statistics

July Temperature

Southern Illinois Airport (2.5 miles)

  • Lowest 14 July, 2026

    68 °F

  • Average July

    80.7 °F

  • Highest 2 July, 2026

    95.6 °F

Climate (2021–2026)

Southern Illinois Airport (2.5 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    69.4 °F
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