Twentymile Slough Weather Forecast

    • 52
    • 80

    Partly Sunny

    • 52
    • 79

    Partly Sunny

    • 54
    • 85

    Partly Sunny

    • 54
    • 85

    Chance Rain Showers

    • 53
    • 85

    Chance Rain Showers

    • 52
    • 81

    Mostly Sunny

    • 54
    • 83

    Partly Sunny

Today 21 Jul Central and Eastern Lake County

Partly cloudy with a 10 percent chance of Thunderstorms. Highs in the lower 70s to lower 80s. West Winds 10 to 15 Mph.

Tonight 21 Jul Central and Eastern Lake County

Partly cloudy. Lows in the mid 40s to lower 50s. Northwest Winds 10 to 15 Mph decreasing to around 5 Mph well after midnight.

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Twentymile Slough Temperature Statistics

July Temperature

Lake County Airport (29.2 miles)

  • Lowest 2 July, 2025

    45 °F

  • Average July

    73.6 °F

  • Highest 13 July, 2025

    98.1 °F

Climate (2020–Present)

Lake County Airport (29.2 miles)

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  • Average Low 2020–2025

    33.5 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    61.3 °F
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