Mendota Weather Forecast

    • 73
    • 88

    Thunderstorms

    • 65
    • 89

    Chance Thunderstorms

    • 65
    • 83

    Mostly Sunny

    • 70
    • 87

    Chance Thunderstorms

    • 61
    • 85

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

Today 17 Jul La Salle

Partly cloudy. Patchy smoke in the morning. Isolated Showers and Thunderstorms early in the morning. Scattered Showers and Thunderstorms in the late morning and afternoon. Humid with Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of precipitation 50 percent.

Tonight 17 Jul La Salle

Partly cloudy in the Evening, then becoming mostly clear. Isolated Showers and Thunderstorms in the evening. Humid with Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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Mendota Temperature Statistics

July Temperature

Illinois Valley Regional Airport (13 miles)

  • Lowest 12 July, 2026

    64.4 °F

  • Average July

    78 °F

  • Highest 2 July, 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

    62.7 °F
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