Mendota Weather Forecast

    • 72
    • 87

    Slight Chance Thunderstorms

    • 72
    • 89

    Mostly Sunny

    • 71
    • 90

    Chance Thunderstorms

    • 70
    • 87

    Chance Thunderstorms

    • 68
    • 88

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

Today 31 Aug La Salle

Mostly cloudy in the Morning, then becoming partly cloudy. A chance of Showers and Thunderstorms early in the morning. A slight chance of Showers and Thunderstorms late. Humid. Highs in the upper 80s. Southwest Winds around 10 Mph. Chance of precipitation 40 percent.

Tonight 31 Aug La Salle

Partly cloudy. A slight chance of Showers and Thunderstorms early in the evening. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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Mendota Temperature Statistics

August Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 23 August, 2026

    55.4 °F

  • Average August

    72.7 °F

  • Highest 10 August, 2026

    89.6 °F

Climate (2021–2026)

Illinois Valley Regional Airport (13 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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