Monticello Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 57
    • 88

    Mostly Sunny

Today 18 Jun Santa Clara Valley Including San Jose

Sunny. Highs in the upper 70s. South Winds 5 to 15 Mph.

Tonight 18 Jun Santa Clara Valley Including San Jose

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. Southeast Winds 10 to 20 Mph.

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Monticello Temperature Statistics

June Temperature

San Jose / Reid / Hillv (3.1 miles)

  • Lowest 2 June, 2026

    53.6 °F

  • Average June

    72.9 °F

  • Highest 11 June, 2026

    96.8 °F

Climate (2021–2026)

San Jose / Reid / Hillv (3.1 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    72.4 °F
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