Rector Reservoir Weather Forecast

    • 56
    • 87

    Mostly Sunny

    • 53
    • 89

    Mostly Sunny

    • 53
    • 90

    Mostly Sunny

    • 50
    • 86

    Mostly Sunny

    • 49
    • 79

    Mostly Sunny

    • 49
    • 80

    Mostly Sunny

    • 50
    • 80

    Mostly Sunny

Today 19 May North Bay Interior Valleys

Sunny. Highs in the upper 70s to lower 90s. Northeast Winds 5 to 10 Mph. Becoming west 10 to 20 Mph in the afternoon.

Tonight 19 May North Bay Interior Valleys

Mostly clear. Lows in the upper 40s to mid 60s. West Winds 10 to 15 Mph decreasing to up to 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rector Reservoir Temperature Statistics

May Temperature

Napa, Napa County Airport (16.2 miles)

  • Lowest 14 May, 2026

    45.6 °F

  • Average May

    61.4 °F

  • Highest 15 May, 2026

    80.7 °F

Climate (2021–Present)

Napa, Napa County Airport (16.2 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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