Peoria Weather Forecast

    • 32
    • 37

    Mostly Cloudy

    • 21
    • 40

    Rain/Snow

    • 17
    • 29

    Chance Snow

    • 11
    • 27

    Chance Snow

    • 7
    • 18

    Chance Snow

    • 8
    • 18

    Partly Sunny

Today 9 Dec Union

Mostly cloudy with a slight chance of snow in the Morning, then partly cloudy in the afternoon. Highs in the upper 30s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of snow 20 percent.

Tonight 9 Dec Union

Partly cloudy. Lows 10 to 15. South Winds around 5 Mph.

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Peoria Temperature Statistics

December Temperature

Marysville Union County Airport (7.5 miles)

  • Lowest 5 December, 2025

    3.4 °F

  • Average December

    24.6 °F

  • Highest 1 December, 2025

    32.2 °F

Climate (2020–Present)

Marysville Union County Airport (7.5 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    62 °F
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