Clayton South Weather Forecast

    • 57
    • 88

    Mostly Sunny

    • 58
    • 87

    Mostly Sunny

    • 61
    • 90

    Mostly Cloudy

    • 63
    • 90

    Mostly Cloudy

    • 62
    • 92

    Mostly Sunny

    • 61
    • 92

    Mostly Sunny

Today 9 Jul Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs in the 80s. Light Winds. Becoming northwest 5 to 15 Mph in the afternoon.

Tonight 9 Jul Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. Northwest Winds 10 to 15 Mph. Becoming southwest up to 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clayton South Temperature Statistics

July Temperature

San Jose / Reid / Hillv (1.2 miles)

  • Lowest 5 July, 2026

    57.2 °F

  • Average July

    71.5 °F

  • Highest 3 July, 2026

    82.4 °F

Climate (2021–2026)

San Jose / Reid / Hillv (1.2 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    72.3 °F
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