Alum Rock Weather Forecast

    • 62
    • 93

    Increasing Clouds

    • 63
    • 89

    Mostly Sunny

    • 61
    • 87

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

    • 61
    • 87

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

Today 22 Aug Santa Clara Valley Including San Jose

Partly cloudy in the morning then becoming sunny. Highs in the 80s to upper 90s. Northwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 22 Aug Santa Clara Valley Including San Jose

Partly cloudy. Lows in the lower 60s. Northwest Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alum Rock Temperature Statistics

August Temperature

San Jose / Reid / Hillv (2.5 miles)

  • Lowest 4 August, 2025

    55.4 °F

  • Average August

    73.8 °F

  • Highest 8 August, 2025

    95 °F

Climate (2020–Present)

San Jose / Reid / Hillv (2.5 miles)

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  • Average Low 2020–2025

    51.5 °F

  • Average 2020–2025

    63.5 °F

  • Average High 2020–2025

    72.2 °F
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