Tri-County Airport Weather Forecast

    • 73
    • 80

    Thunderstorms

    • 73
    • 90

    Rain Showers

    • 65
    • 86

    Chance Thunderstorms

    • 63
    • 82

    Mostly Sunny

    • 68
    • 85

    Chance Thunderstorms

    • 64
    • 83

    Slight Chance Thunderstorms

    • 61
    • 78

    Partly Sunny

Today 14 Aug Knox

Mostly cloudy with a slight chance of Showers and Thunderstorms. Highs in the lower 80s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 14 Aug Knox

Mostly cloudy. A chance of Showers and Thunderstorms this Evening, then Showers with Thunderstorms likely after midnight. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible after midnight. Lows in the lower 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

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Tri-County Airport Temperature Statistics

August Temperature

Peoria - General Downing-Peoria International Airport (21.1 miles)

  • Lowest 3 August, 2026

    62.7 °F

  • Average August

    76.4 °F

  • Highest 10 August, 2026

    93.7 °F

Climate (2021–2026)

Peoria - General Downing-Peoria International Airport (21.1 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    64.7 °F
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