Rector Reservoir Weather Forecast

    • 52
    • 85

    Mostly Sunny

    • 54
    • 88

    Sunny

    • 48
    • 81

    Mostly Sunny

    • 50
    • 78

    Mostly Sunny

    • 50
    • 84

    Mostly Sunny

    • 51
    • 83

    Mostly Sunny

Today 20 May North Bay Interior Valleys

Sunny. Highs in the upper 60s to mid 80s. West Winds 10 to 20 Mph.

Tonight 20 May North Bay Interior Valleys

Mostly clear. Lows in the 40s to mid 50s. West Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rector Reservoir Temperature Statistics

May Temperature

Napa, Napa County Airport (16.2 miles)

  • Lowest 4 May, 2025

    42.7 °F
  • Average May

    60.7 °F
  • Highest 9 May, 2025

    87.7 °F

Climate (2020–Present)

Napa, Napa County Airport (16.2 miles)

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  • Average Low 2020–2025

    47 °F
  • Average 2020–2025

    58.2 °F
  • Average High 2020–2025

    70.7 °F
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