Mendota Weather Forecast

    • 51
    • 66

    Mostly Cloudy

    • 53
    • 67

    Mostly Cloudy

    • 53
    • 68

    Partly Sunny

    • 57
    • 71

    Partly Sunny

    • 62
    • 72

    Rain Showers Likely

    • 61
    • 70

    Chance Rain Showers

Today 25 Sep La Salle

Mostly cloudy. Isolated Showers early in the Morning, then isolated Sprinkles late in the morning. Highs in the upper 60s. East Winds around 5 Mph. Chance of precipitation 20 percent.

Tonight 25 Sep La Salle

Mostly cloudy in the Evening, then clearing. Lows in the lower 50s. East Winds around 5 Mph.

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Mendota Temperature Statistics

September Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    72.5 °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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