Green Valley Weather Forecast

    • 51
    • 72

    Decreasing Clouds

    • 57
    • 80

    Sunny

    • 59
    • 90

    Sunny

    • 59
    • 90

    Sunny

    • 58
    • 84

    Mostly Sunny

    • 59
    • 83

    Mostly Sunny

Today 27 Sep Central Solano County Including Fairfield and Vacaville

Mostly cloudy in the morning then clearing. Highs around 74. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 27 Sep Central Solano County Including Fairfield and Vacaville

Clear. Lows around 52. Southwest Winds 10 to 15 Mph.

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Green Valley Temperature Statistics

September Temperature

Napa, Napa County Airport (6.8 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    66 °F

  • Highest 9 September, 2026

    99.6 °F

Climate (2021–2026)

Napa, Napa County Airport (6.8 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    70.3 °F
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