Denny Weather Forecast

    • 76
    • 93

    Mostly Sunny

    • 68
    • 96

    Mostly Sunny

    • 61
    • 83

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 64
    • 81

    Slight Chance Thunderstorms

    • 68
    • 88

    Partly Sunny

    • 72
    • 94

    Mostly Sunny

Today 20 Jul Perry

Sunny. Near steady temperature around 90. Calm Winds.

Tonight 20 Jul Perry

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

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Denny Temperature Statistics

July Temperature

Southern Illinois Airport (18.6 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 (18.6 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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