Boulder Weather Forecast

    • 54
    • 70

    Increasing Clouds

    • 52
    • 72

    Decreasing Clouds

    • 55
    • 72

    Mostly Cloudy

    • 52
    • 70

    Chance Rain

    • 50
    • 66

    Slight Chance Rain

    • 52
    • 69

    Partly Sunny

    • 53
    • 73

    Mostly Sunny

Today 22 Oct Santa Clara Valley Including San Jose

Mostly cloudy. Isolated Showers. Highs in the lower 70s. Northwest Winds 5 to 15 Mph.

Tonight 22 Oct Santa Clara Valley Including San Jose

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s. Northwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boulder Temperature Statistics

October Temperature

San Jose / Reid / Hillv (4.3 miles)

  • Lowest 16 October, 2025

    48.2 °F

  • Average October

    66.6 °F

  • Highest 7 October, 2025

    87.8 °F

Climate (2020–Present)

San Jose / Reid / Hillv (4.3 miles)

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  • Average Low 2020–2025

    51.5 °F

  • Average 2020–2025

    63.4 °F

  • Average High 2020–2025

    72.1 °F
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