Glen Avon Weather Forecast

    • 31
    • 53

    Partly Sunny

    • 43
    • 50

    Chance Rain

    • 48
    • 51

    Chance Rain

    • 40
    • 61

    Partly Sunny

    • 29
    • 60

    Mostly Cloudy

    • 14
    • 39

    Mostly Sunny

Today 23 Dec McLean

Mostly sunny. Highs in the lower 50s. West Winds around 10 Mph with Gusts up to 20 Mph, becoming northwest in the afternoon.

Tonight 23 Dec McLean

Mostly cloudy. Not as cool with Lows in the upper 30s. Temperature rising into the lower 40s. Southwest Winds 10 to 15 Mph.

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Glen Avon Temperature Statistics

December Temperature

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (18.6 miles)

  • Lowest 14 December, 2025

    -9 °F

  • Average December

    23.5 °F

  • Highest 18 December, 2025

    53.1 °F

Climate (2020–Present)

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (18.6 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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