Frank Horan Slough Weather Forecast

    • 59
    • 89

    Patchy Smoke

    • 59
    • 88

    Mostly Sunny

    • 59
    • 89

    Mostly Sunny

    • 60
    • 91

    Sunny

    • 63
    • 93

    Sunny

    • 58
    • 85

    Mostly Sunny

Today 4 Aug Southwestern Solano County Including Vallejo

Sunny. Highs 80 to 90. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 4 Aug Southwestern Solano County Including Vallejo

Clear. Patchy smoke after midnight. Lows 56 to 62. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Frank Horan Slough Temperature Statistics

August Temperature

Napa, Napa County Airport (9.9 miles)

  • Lowest 1 August, 2026

    57.9 °F

  • Average August

    67.8 °F

  • Highest 1 August, 2026

    81 °F

Climate (2021–2026)

Napa, Napa County Airport (9.9 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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