American Canyon Weather Forecast

    • 50
    • 64

    Rain

    • 48
    • 61

    Rain

    • 44
    • 63

    Chance Rain

    • 46
    • 69

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

    • 49
    • 69

    Partly Sunny

Today 20 Apr North Bay Interior Valleys

Rain likely in the Morning, then rain in the afternoon. Highs in the mid 50s to upper 60s. South Winds 10 to 20 Mph.

Tonight 20 Apr North Bay Interior Valleys

Rain. Patchy fog after midnight. Lows in the 40s to mid 50s. South Winds 10 to 15 Mph. Becoming southeast around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

American Canyon Temperature Statistics

April Temperature

Napa, Napa County Airport (2.5 miles)

  • Lowest 3 April, 2026

    38.6 °F

  • Average April

    57.8 °F

  • Highest 5 April, 2026

    83.6 °F

Climate (2021–Present)

Napa, Napa County Airport (2.5 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
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