Rector Reservoir Weather Forecast

    • 54
    • 82

    Increasing Clouds

    • 57
    • 77

    Chance Rain Showers

    • 53
    • 76

    Chance Rain Showers

    • 52
    • 78

    Chance Rain Showers

    • 53
    • 79

    Mostly Sunny

    • 53
    • 84

    Mostly Sunny

    • 54
    • 83

    Partly Sunny

Today 7 Sep North Bay Interior Valleys

Partly cloudy. Highs in the lower 70s to mid 80s. West Winds 10 to 15 Mph.

Tonight 7 Sep North Bay Interior Valleys

Partly cloudy. Patchy fog after midnight. Lows in the 50s to lower 60s. West Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rector Reservoir Temperature Statistics

September Temperature

Napa, Napa County Airport (16.2 miles)

  • Lowest 3 September, 2025

    52 °F

  • Average September

    66.1 °F

  • Highest 1 September, 2025

    89.1 °F

Climate (2020–Present)

Napa, Napa County Airport (16.2 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.5 °F
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