Mendota Weather Forecast

    • 60
    • 81

    Partly Sunny

    • 61
    • 79

    Mostly Sunny

    • 71
    • 86

    Chance Rain Showers

    • 62
    • 86

    Partly Sunny

    • 58
    • 80

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

Today 6 Sep La Salle

Mostly sunny late in the Morning, then becoming partly cloudy. Highs in the lower 80s. East Winds 5 to 10 Mph.

Tonight 6 Sep La Salle

Partly cloudy. Lows around 60. East Winds around 5 Mph.

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Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 1 September, 2026

    71.6 °F
  • Average September

    82.8 °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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