Lake Nacimiento Weather Forecast

    • 33
    • 60

    Decreasing Clouds

    • 36
    • 63

    Mostly Sunny

    • 41
    • 65

    Sunny

    • 43
    • 68

    Sunny

    • 44
    • 68

    Sunny

    • 44
    • 69

    Mostly Sunny

Today 3 Dec Santa Lucia Mountains

Sunny in the morning then mostly cloudy. Highs in the mid 50s to mid 60s. Northeast Winds 15 to 25 Mph.

Tonight 3 Dec Santa Lucia Mountains

Partly cloudy in the evening then mostly clear. Lows in the 30s to around 40 except the mid 40s to around 50 warmer Hills. Northeast Winds around 15 Mph.

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Lake Nacimiento Temperature Statistics

December Temperature

Paso Robles Municipal Airport (14.3 miles)

  • Lowest 1 December, 2025

    37 °F

  • Average December

    45.2 °F

  • Highest 1 December, 2025

    60.1 °F

Climate (2020–Present)

Paso Robles Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    77.7 °F
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