Sunnyvale Weather Forecast

    • 56
    • 76

    Mostly Sunny

    • 58
    • 72

    Increasing Clouds

    • 56
    • 72

    Partly Sunny

    • 58
    • 75

    Partly Sunny

    • 59
    • 76

    Partly Sunny

    • 57
    • 74

    Partly Sunny

    • 57
    • 75

    Partly Sunny

Today 30 Aug Santa Clara Valley Including San Jose

Sunny. Highs near 80. Northwest Winds 5 to 15 Mph.

Tonight 30 Aug Santa Clara Valley Including San Jose

Mostly clear late in the evening then becoming partly cloudy. Lows in the mid 50s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunnyvale Temperature Statistics

August Temperature

San Jose, San Jose International Airport (6.2 miles)

  • Lowest 4 August, 2026

    58.6 °F

  • Average August

    71.3 °F

  • Highest 3 August, 2026

    91.7 °F

Climate (2021–2026)

San Jose, San Jose International Airport (6.2 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.8 °F
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