Mendota Weather Forecast

    • 67
    • 79

    Rain Showers Likely

    • 68
    • 80

    Rain Showers Likely

    • 72
    • 86

    Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

    • 61
    • 79

    Partly Sunny

    • 64
    • 79

    Partly Sunny

Today 13 Aug La Salle

Mostly cloudy. Widespread dense fog early in the morning. A chance of Showers and a slight chance of Thunderstorms late in the morning. Showers likely and a chance of Thunderstorms in the afternoon. Humid. Highs in the lower 80s. East Winds 5 to 10 Mph. Chance of precipitation 70 percent.

Tonight 13 Aug La Salle

Showers likely in the evening. A chance of Thunderstorms. Showers after midnight. Some Thunderstorms may produce heavy rainfall until early morning. Some Thunderstorms may produce heavy rainfall late. Locally heavy rainfall possible after midnight. Humid with Lows in the upper 60s. East Winds 5 to 10 Mph. Chance of precipitation 80 percent.

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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 °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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