Vallejo Weather Forecast

    • 58
    • 66

    Increasing Clouds

    • 58
    • 67

    Partly Sunny

    • 58
    • 66

    Mostly Cloudy

    • 57
    • 72

    Partly Sunny

    • 57
    • 74

    Mostly Sunny

    • 57
    • 71

    Partly Sunny

Today 18 Aug Southwestern Solano County Including Vallejo

Partly cloudy in the morning then clearing. Highs 77 to 87. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 18 Aug Southwestern Solano County Including Vallejo

Mostly clear in the evening then becoming mostly cloudy. Lows around 59. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Vallejo Temperature Statistics

August Temperature

Napa, Napa County Airport (6.8 miles)

  • Lowest 6 August, 2026

    51.7 °F

  • Average August

    66.2 °F

  • Highest 2 August, 2026

    86.6 °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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