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      Coastal Flood Advisory
      until 6:00 PM PST
      Elev 166 ft, 38.301 °N 122.268 °W

      Napa, CA

      Alta Heights O Station50°
      Updated: 2:59 AM PDT on October 31, 2026 (GMT -7)
      28 seconds ago
      70°
      47°
      50
      Feels Like 50
      Clear
      N
      1
      Similar temperature is expected today
      Wundermap

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       Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Sat 10/31
        Low 43°f
         4% Precip. / 0 in
        Partly cloudy skies. Low 43F. Winds light and variable.
        Tomorrow
        Sun 11/01
        High 66°f
         3% Precip. / 0 in
        Mostly cloudy skies early will become partly cloudy later in the day. High 66F. Winds WSW at 5 to 10 mph.
        Tomorrow night
        Sun 11/01
        Low 45°f
         51% Precip. / 0.06 in
        Partly cloudy skies early will give way to occasional showers later during the night. Low around 45F. Winds light and variable. Chance of rain 50%.
        Hourly Forecast
        Now
        48°
        3AM
        48°
        4AM
        47°
        5AM
        47°
        6AM
        45°
        7AM
        44°
        7:34AM
        Sunrise
        8AM
        45°
        9AM
        49°
        10AM
        53°
        11AM
        57°
        12PM
        60°
        1PM
        62°
        2PM
        64°
        3PM
        64°
        4PM
        64°
        5PM
        63°
        6PM
        60°
        6:10PM
        Sunset
        7PM
        56°
        8PM
        53°
        9PM
        51°
        10PM
        50°
        11PM
        49°
        12AM
        48°
        1AM
        52%
        48°
        1AM
        39%
        48°
        Precipitation
        52%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        31
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.89 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point45°F
        5. Humidity 89%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KAPC Station History
        Almanac for October 31, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 73°F 92°F 1906
        4. Low 43°F 47°F 29°F 1935
        5. Rain/Snow Depth
        6. Precipitation 0.06 in 4.4 in -
        7. Snow 0 in - in -
        Almanac for November 1, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 68°F 72°F 90°F
        4. Low 45°F 46°F 29°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:34 AM 6:10 PM
        3. Civil Twilight 7:07 AM 6:37 PM
        4. Nautical Twilight 6:35 AM 7:08PM
        5. Astronomical Twilight 6:05 AM 7:39 PM
        1. Length of Visible Light 11h 30m
        2. Length of Day 10h 35m
        3. Tomorrow will be 2 minutes 7 seconds shorter
        1. Moon 11:29 PM 1:40 PM
        2. Waning Gibbous56% of the Moon is Illuminated
        Nov 1
        Waning Half Last Qtr
        Nov 8
        New Moon
        Nov 17
        Waxing Half First Qtr
        Nov 24
        Full Moon
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