Guadalupe Reservoir County Park Weather Forecast

    • 54
    • 77

    Becoming Sunny

    • 56
    • 81

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 59
    • 90

    Partly Sunny

    • 56
    • 82

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

Today 21 Sep Santa Cruz Mountains

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the 60s to lower 70s. Southwest Winds up to 5 Mph.

Tonight 21 Sep Santa Cruz Mountains

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light Winds. Becoming southwest up to 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Guadalupe Reservoir County Park Temperature Statistics

September Temperature

San Jose / Reid / Hillv (9.9 miles)

  • Lowest 7 September, 2026

    53.6 °F

  • Average September

    72.6 °F

  • Highest 9 September, 2026

    98.6 °F

Climate (2021–2026)

San Jose / Reid / Hillv (9.9 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    72.2 °F
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