The Forest of Nisene Marks State Park Weather Forecast

    • 59
    • 72

    Chance Rain Showers

    • 58
    • 73

    Chance Rain Showers

    • 57
    • 76

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

    • 60
    • 83

    Partly Sunny

    • 59
    • 76

    Chance Rain Showers

Today 18 Sep Northern Monterey Bay

Mostly cloudy. A chance of Showers and isolated Thunderstorms. Highs in the lower 70s. Light Winds. Becoming southwest around 5 Mph in the afternoon.

Tonight 18 Sep Northern Monterey Bay

Mostly cloudy. A chance of Showers. Patchy fog after midnight. Lows around 60. Light Winds.

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  • Temperature Real-Time

The Forest of Nisene Marks State Park Temperature Statistics

September Temperature

Watsonville, Watsonville Municipal Airport (8.7 miles)

  • Lowest 14 September, 2025

    52 °F
  • Average September

    64 °F
  • Highest 15 September, 2025

    87.1 °F

Climate (2020–Present)

Watsonville, Watsonville Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    47.2 °F
  • Average 2020–2025

    56.6 °F
  • Average High 2020–2025

    67.9 °F
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