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      Small Craft Advisory
      until 9:00 PM PDT
      Elev 8 ft, 37.590 °N 122.078 °W

      Union City, CA

      Union City Station61°
      Updated: 4:02 AM PDT on September 13, 2026 (GMT -7)
      3 minutes ago
      72°
      57°
      61
      Feels Like 61
      Clear
      N
      4
      Lower temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Mon 09/14
        High 72°f
         2% Precip. / 0 in
        Abundant sunshine. High 72F. Winds WNW at 10 to 20 mph.
        Tonight
        Mon 09/14
        Low 54°f
         8% Precip. / 0 in
        Clear to partly cloudy. Low 54F. WNW winds shifting to NE at 10 to 15 mph.
        Tomorrow
        Tue 09/15
        High 79°f56°f
         8% Precip. / 0 in
        Partly cloudy skies. High 79F. Winds NW at 10 to 20 mph.
        Hourly Forecast
        Now
        60°
        5AM
        60°
        6AM
        60°
        6:48AM
        Sunrise
        7AM
        60°
        8AM
        61°
        9AM
        63°
        10AM
        65°
        11AM
        67°
        12PM
        69°
        1PM
        70°
        2PM
        71°
        3PM
        72°
        4PM
        71°
        5PM
        70°
        6PM
        68°
        7PM
        66°
        7:18PM
        Sunset
        8PM
        64°
        9PM
        63°
        10PM
        61°
        11PM
        60°
        12AM
        59°
        1AM
        59°
        2AM
        58°
        3AM
        57°
        4AM
        57°
        Precipitation
        8%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        31
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.01 in
        2. Visibility 6 miles
        3. Clouds Partly Cloudy
        4. Dew Point54°F
        5. Humidity 80%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KHWD Station History
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 78°F 100°F 1979
        4. Low 57°F 58°F 43°F 1948
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for September 14, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 78°F 103°F
        4. Low 57°F 58°F 45°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:48 AM 7:18 PM
        3. Civil Twilight 6:22 AM 7:45 PM
        4. Nautical Twilight 5:51 AM 8:16PM
        5. Astronomical Twilight 5:19 AM 8:47 PM
        1. Length of Visible Light 13h 22m
        2. Length of Day 12h 30m
        3. Tomorrow will be 2 minutes 22 seconds shorter
        1. Moon 9:34 AM 8:25 PM
        2. Waxing Crescent7% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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