Chesbro Reservoir Weather Forecast

    • 53
    • 75

    Becoming Sunny

    • 54
    • 80

    Partly Sunny

    • 60
    • 92

    Mostly Sunny

    • 58
    • 92

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 53
    • 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

Chesbro Reservoir Temperature Statistics

September Temperature

South County Airport of Santa Clara County (6.8 miles)

  • Lowest 7 September, 2026

    50 °F

  • Average September

    68.5 °F

  • Highest 9 September, 2026

    102.2 °F

Climate (2021–2026)

South County Airport of Santa Clara County (6.8 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    58.9 °F

  • Average High 2021–2026

    73.1 °F
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