Newell Open Space Weather Forecast

    • 62
    • 85

    Becoming Sunny

    • 59
    • 75

    Partly Sunny

    • 56
    • 76

    Partly Sunny

    • 56
    • 78

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

Today 21 Jul North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of Showers. Highs in the upper 70s to mid 90s. Southwest Winds up to 5 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 21 Jul North Bay Interior Valleys

Mostly cloudy. Patchy fog. Lows in the 50s to lower 60s. West Winds up to 5 Mph.

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Newell Open Space Temperature Statistics

July Temperature

Napa, Napa County Airport (3.1 miles)

  • Lowest 11 July, 2026

    48.7 °F

  • Average July

    65.9 °F

  • Highest 13 July, 2026

    89.7 °F

Climate (2021–2026)

Napa, Napa County Airport (3.1 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    70.2 °F
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