Rector Reservoir Weather Forecast

    • 44
    • 62

    Dense Fog

    • 48
    • 58

    Dense Fog

    • 50
    • 56

    Rain

    • 50
    • 55

    Rain

    • 48
    • 57

    Rain

    • 44
    • 56

    Rain Likely

    • 45
    • 52

    Rain

Today 17 Dec North Bay Interior Valleys

Partly cloudy. Highs in the 50s to mid 60s. West Winds 5 to 10 Mph.

Tonight 17 Dec North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Widespread dense fog. Lows in the 40s. West Winds up to 5 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rector Reservoir Temperature Statistics

December Temperature

Napa, Napa County Airport (16.2 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    44.4 °F

  • Highest 3 December, 2025

    66 °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 °F

  • Average High 2020–2025

    70.1 °F
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