Mendota Weather Forecast

    • 65
    • 83

    Chance Thunderstorms

    • 63
    • 80

    Mostly Sunny

    • 65
    • 81

    Chance Thunderstorms

    • 59
    • 76

    Slight Chance Thunderstorms

    • 59
    • 76

    Slight Chance Thunderstorms

    • 62
    • 77

    Partly Sunny

Today 16 Aug La Salle

Mostly cloudy. Patchy fog early in the morning. A slight chance of Showers early in the morning. A slight chance of Showers in the afternoon. A slight chance of Thunderstorms late. Highs in the mid 80s. West Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 16 Aug La Salle

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 60s. Northwest Winds 5 to 10 Mph.

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Mendota Temperature Statistics

August Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    74.1 °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

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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