Mendota Weather Forecast

    • 73
    • 93

    Slight Chance Thunderstorms

    • 72
    • 91

    Chance Thunderstorms

    • 68
    • 88

    Slight Chance Thunderstorms

    • 64
    • 80

    Partly Sunny

    • 65
    • 82

    Partly Sunny

    • 71
    • 86

    Chance Rain Showers

Today 3 Sep La Salle

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Hot. Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Chance of precipitation 20 percent. Heat index Values up to 103.

Tonight 3 Sep La Salle

Mostly clear. A slight chance of Showers and Thunderstorms late. Humid with Lows in the mid 70s. South Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 1 September, 2026

    71.6 °F

  • Average September

    82.3 °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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