P.J. Killian Airport Weather Forecast

    • 55
    • 79

    Chance Rain Showers

    • 64
    • 81

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 67
    • 85

    Mostly Cloudy

    • 70
    • 90

    Chance Thunderstorms

    • 62
    • 84

    Chance Rain Showers

Today 10 Sep McLean

A slight chance of Thunderstorms in the morning. Patchy fog in the morning. Mostly cloudy with a chance of Showers. Highs in the upper 70s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 10 Sep McLean

Cloudy with a 20 percent chance of Showers. Near steady temperature in the upper 60s. West Winds around 5 Mph.

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P.J. Killian Airport Temperature Statistics

September Temperature

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (9.3 miles)

  • Lowest 7 September, 2026

    57.9 °F

  • Average September

    79.8 °F

  • Highest 1 September, 2026

    95 °F

Climate (2021–2026)

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (9.3 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    62.7 °F
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