P.J. Killian Airport Weather Forecast

    • 26
    • 39

    Increasing Clouds

    • 38
    • 45

    Mostly Cloudy

    • 34
    • 52

    Partly Sunny

    • 53
    • 53

    Chance Rain

    • 47
    • 62

    Mostly Cloudy

    • 38
    • 57

    Partly Sunny

    • 24
    • 51

    Mostly Cloudy

Today 21 Dec McLean

Sunny. Highs in the upper 30s. South Winds around 5 Mph.

Tonight 21 Dec McLean

Mostly clear this Evening, then becoming mostly cloudy. Lows in the mid 20s. South Winds 10 to 15 Mph.

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P.J. Killian Airport Temperature Statistics

December Temperature

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

  • Lowest 14 December, 2025

    -9 °F

  • Average December

    22.8 °F

  • Highest 18 December, 2025

    53.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.2 °F
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