San Martin Weather Forecast

    • 44
    • 70

    Becoming Sunny

    • 46
    • 76

    Mostly Sunny

    • 47
    • 78

    Mostly Sunny

    • 45
    • 74

    Partly Sunny

    • 45
    • 73

    Partly Sunny

    • 46
    • 72

    Partly Sunny

Today 23 Oct Santa Clara Valley Including San Jose

Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the upper 60s. Northwest Winds up to 5 Mph increasing to 5 to 15 Mph in the afternoon.

Tonight 23 Oct Santa Clara Valley Including San Jose

Clear. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Martin Temperature Statistics

October Temperature

South County Airport of Santa Clara County (0.6 miles)

  • Lowest 11 October, 2026

    44.6 °F

  • Average October

    67.1 °F

  • Highest 4 October, 2026

    102.2 °F

Climate (2021–2026)

South County Airport of Santa Clara County (0.6 miles)

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  • Average Low 2021–2026

    48.1 °F

  • Average 2021–2026

    59 °F

  • Average High 2021–2026

    73.2 °F
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