Grass Valley Wilderness Area Weather Forecast

    • 51
    • 67

    Mostly Sunny

    • 49
    • 69

    Mostly Sunny

    • 51
    • 68

    Partly Sunny

    • 50
    • 68

    Mostly Cloudy

    • 50
    • 65

    Mostly Cloudy

    • 50
    • 63

    Rain Showers

Today 18 Dec Western Mojave Desert

Sunny. Highs around 70. West Winds up to 5 Mph shifting to the south in the afternoon.

Tonight 18 Dec Western Mojave Desert

Clear. Lows around 50. Northwest Winds up to 10 Mph.

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Grass Valley Wilderness Area Temperature Statistics

December Temperature

China Lake, Naval Air Facility (34.8 miles)

  • Lowest 5 December, 2025

    28.9 °F

  • Average December

    48 °F

  • Highest 11 December, 2025

    70 °F

Climate (2020–Present)

China Lake, Naval Air Facility (34.8 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    67.9 °F

  • Average High 2020–2025

    82.5 °F
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