Tri-County Airport Weather Forecast

    • 54
    • 75

    Rain Showers Likely

    • 62
    • 81

    Chance Thunderstorms

    • 62
    • 85

    Chance Thunderstorms

    • 68
    • 85

    Chance Thunderstorms

    • 65
    • 88

    Rain Showers Likely

    • 57
    • 78

    Rain Showers Likely

Today 14 May Knox

Sunny. Highs in the mid 70s. South Winds 5 to 10 Mph.

Tonight 14 May Knox

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Not as cool with Lows in the mid 50s. South Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Tri-County Airport Temperature Statistics

May Temperature

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

  • Lowest 7 May, 2026

    36.6 °F

  • Average May

    55.5 °F

  • Highest 12 May, 2026

    81 °F

Climate (2021–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    64.6 °F
Get WillyWeather+ to remove ads