Mendota Weather Forecast

    • 23
    • 32

    Increasing Clouds

    • 35
    • 41

    Mostly Cloudy

    • 30
    • 45

    Mostly Cloudy

    • 46
    • 46

    Chance Rain

    • 37
    • 57

    Chance Drizzle

    • 32
    • 48

    Mostly Cloudy

Today 21 Dec La Salle

Sunny. Highs in the lower 30s. Northwest Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 21 Dec La Salle

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 20s. South Winds 5 to 10 Mph.

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Mendota Temperature Statistics

December Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 14 December, 2025

    -3.3 °F

  • Average December

    22.6 °F

  • Highest 18 December, 2025

    52.7 °F

Climate (2020–Present)

Illinois Valley Regional Airport (13 miles)

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  • Average Low 2020–2025

    43.1 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.1 °F
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