Mendota Weather Forecast

    • 64
    • 79

    Partly Sunny

    • 63
    • 82

    Slight Chance Thunderstorms

    • 60
    • 80

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

    • 66
    • 80

    Mostly Cloudy

    • 70
    • 85

    Chance Rain Showers

Today 25 Aug La Salle

Partly cloudy. Patchy fog early in the morning. Highs in the upper 70s. South Winds around 5 Mph.

Tonight 25 Aug La Salle

Partly cloudy. A slight chance of Showers and Thunderstorms late. Lows in the mid 60s. South Winds around 5 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

    73.4 °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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