Rio Del Mar Weather Forecast

    • 53
    • 76

    Mostly Sunny

    • 52
    • 67

    Partly Sunny

    • 52
    • 65

    Partly Sunny

    • 54
    • 70

    Mostly Sunny

    • 57
    • 73

    Mostly Sunny

    • 57
    • 73

    Partly Sunny

Today 25 Sep Northern Monterey Bay

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs around 80. Northwest Winds around 5 Mph. Becoming southwest in the afternoon.

Tonight 25 Sep Northern Monterey Bay

Mostly clear. Lows in the lower 50s. North Winds 5 to 10 Mph.

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Rio Del Mar Temperature Statistics

September Temperature

Watsonville, Watsonville Municipal Airport (5.6 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    65.3 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

Watsonville, Watsonville Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.3 °F
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