Mendota Weather Forecast

    • 52
    • 74

    Mostly Sunny

    • 61
    • 76

    Chance Rain Showers

    • 66
    • 77

    Rain Showers

    • 55
    • 73

    Rain Showers Likely

    • 49
    • 65

    Slight Chance Rain Showers

    • 52
    • 65

    Partly Sunny

Today 28 Sep La Salle

Mostly sunny. Patchy fog early in the morning. Highs in the mid 70s. Northeast Winds around 5 Mph.

Tonight 28 Sep La Salle

Clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. East Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    71.5 °F

  • Highest 1 September, 2026

    93.2 °F

Climate (2021–2026)

Illinois Valley Regional Airport (13 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
Get WillyWeather+ to remove ads