Mendota Weather Forecast

    • 58
    • 85

    Partly Sunny

    • 52
    • 72

    Mostly Cloudy

    • 66
    • 74

    Rain Showers Likely

    • 63
    • 84

    Chance Rain Showers

    • 63
    • 78

    Chance Rain Showers

Today 12 Sep La Salle

Partly cloudy. Highs in the mid 80s. West Winds 5 to 10 Mph.

Tonight 12 Sep La Salle

Partly cloudy. Less humid with Lows around 60. North Winds around 5 Mph.

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Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 7 September, 2026

    59 °F

  • Average September

    77.5 °F

  • Highest 1 September, 2026

    93.2 °F

Climate (2021–2026)

Illinois Valley Regional Airport (13 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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