San Martin Weather Forecast

    • 51
    • 73

    Rain

    • 46
    • 63

    Rain

    • 43
    • 67

    Slight Chance Rain

    • 44
    • 72

    Partly Sunny

    • 47
    • 72

    Partly Sunny

    • 48
    • 70

    Partly Sunny

Today 20 Apr Santa Clara Valley Including San Jose

Sunny in the morning then becoming mostly cloudy. A slight chance of rain in the morning. A chance of rain in the afternoon. Highs in the lower 70s. South Winds 10 to 20 Mph.

Tonight 20 Apr Santa Clara Valley Including San Jose

Rain likely in the Evening, then rain after midnight. Lows in the lower 50s. South Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Martin Temperature Statistics

April Temperature

South County Airport of Santa Clara County (0.6 miles)

  • Lowest 3 April, 2026

    39.2 °F

  • Average April

    59.4 °F

  • Highest 5 April, 2026

    86 °F

Climate (2021–Present)

South County Airport of Santa Clara County (0.6 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    73.1 °F
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