Alum Rock Weather Forecast

    • 52
    • 80

    Mostly Sunny

    • 50
    • 78

    Mostly Sunny

    • 51
    • 72

    Partly Sunny

    • 47
    • 62

    Partly Sunny

    • 49
    • 69

    Mostly Sunny

    • 51
    • 75

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 30 Apr Santa Clara Valley Including San Jose

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 70s. Light Winds becoming southwest 5 to 10 Mph in the afternoon.

Tonight 30 Apr Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 50s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alum Rock Temperature Statistics

April Temperature

San Jose / Reid / Hillv (2.5 miles)

  • Lowest 3 April, 2025

    42.8 °F

  • Average April

    61.2 °F

  • Highest 14 April, 2025

    82.4 °F

Climate (2020–Present)

San Jose / Reid / Hillv (2.5 miles)

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  • Average Low 2020–2025

    51.6 °F

  • Average 2020–2025

    63.7 °F

  • Average High 2020–2025

    72.4 °F
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