Mendota Weather Forecast

    • 62
    • 76

    Rain Showers

    • 53
    • 78

    Mostly Sunny

    • 61
    • 82

    Mostly Sunny

    • 63
    • 83

    Chance Rain Showers

    • 67
    • 82

    Chance Rain Showers

    • 66
    • 88

    Rain Showers Likely

Today 9 Sep La Salle

Cloudy. Showers late in the morning. Highs in the upper 70s. West Winds 5 to 10 Mph. Chance of precipitation 80 percent.

Tonight 9 Sep La Salle

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 60s. Northwest 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

    79.5 °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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