Mendota Weather Forecast

    • 55
    • 63

    Chance Rain Showers

    • 51
    • 62

    Partly Sunny

    • 52
    • 67

    Partly Sunny

    • 52
    • 67

    Mostly Cloudy

    • 51
    • 69

    Mostly Cloudy

    • 53
    • 69

    Mostly Cloudy

Today 21 Sep La Salle

Cloudy. A slight chance of Showers early in the afternoon. Near steady temperature in the lower 60s. Northeast Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 21 Sep La Salle

Cloudy. A slight chance of Showers after midnight. Lows in the mid 50s. Northeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    74 °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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