Williams Lake Weather Forecast

    • 35
    • 53

    Increasing Clouds

    • 51
    • 62

    Mostly Cloudy

    • 59
    • 71

    Slight Chance Thunderstorms

    • 47
    • 76

    Partly Sunny

    • 51
    • 68

    Partly Sunny

    • 63
    • 77

    Mostly Cloudy

Today 15 Dec San Jacinto

Widespread frost in the morning. Sunny. Highs in the lower 50s. Northeast Winds around 5 Mph in the Morning, becoming light and variable.

Tonight 15 Dec San Jacinto

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy frost. Lows in the mid 30s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

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Williams Lake Temperature Statistics

December Temperature

Cleveland (12.4 miles)

  • Lowest 9 December, 2025

    32.2 °F

  • Average December

    48.7 °F

  • Highest 12 December, 2025

    73.4 °F

Climate (2020–Present)

Cleveland (12.4 miles)

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  • Average Low 2020–2025

    60.4 °F

  • Average 2020–2025

    69.9 °F

  • Average High 2020–2025

    81.5 °F
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