Opal Cliffs Weather Forecast

    • 60
    • 77

    Becoming Sunny

    • 63
    • 78

    Mostly Sunny

    • 61
    • 79

    Mostly Sunny

    • 60
    • 78

    Partly Sunny

    • 59
    • 74

    Partly Sunny

    • 59
    • 71

    Partly Sunny

Today 14 Sep Northern Monterey Bay

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. A slight chance of drizzle in the morning. Highs around 80. Southeast Winds around 5 Mph. Becoming southwest in the afternoon.

Tonight 14 Sep Northern Monterey Bay

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. Northeast Winds 5 to 10 Mph in the evening. Becoming light.

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Opal Cliffs Temperature Statistics

September Temperature

Watsonville, Watsonville Municipal Airport (9.3 miles)

  • Lowest 7 September, 2025

    54 °F

  • Average September

    64 °F

  • Highest 1 September, 2025

    84.9 °F

Climate (2020–Present)

Watsonville, Watsonville Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    67.8 °F
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