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      Elev 280 ft, 37.997 °N 122.279 °W

      Hercules, CA

      Updated: 12:11 AM PDT on September 18, 2026 (GMT -7)
      5 minutes ago
      63°
      60°
      58
      Feels Like 58
      Clear
      N
      4
      Higher 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
        Tonight
        Fri 09/18
        Low 55°f
        16% Precip. / 0 in
        Partly cloudy. Low near 55F. Winds light and variable.
        Tomorrow
        Sat 09/19
        High 79°f
        20% Precip. / 0 in
        Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 79F. Winds WSW at 10 to 15 mph.
        Tomorrow night
        Sat 09/19
        Low 57°f
        20% Precip. / 0 in
        Clear skies early will become overcast later during the night. Low 57F. Winds SSW at 10 to 15 mph.
        Hourly Forecast
        Now
        56°
        1AM
        56°
        2AM
        56°
        3AM
        56°
        4AM
        57°
        5AM
        57°
        6AM
        57°
        6:53AM
        Sunrise
        7AM
        56°
        8AM
        58°
        9AM
        61°
        10AM
        63°
        11AM
        66°
        12PM
        70°
        1PM
        74°
        2PM
        76°
        3PM
        78°
        4PM
        77°
        5PM
        77°
        6PM
        75°
        7PM
        71°
        7:11PM
        Sunset
        8PM
        67°
        9PM
        65°
        10PM
        63°
        11PM
        62°
        12AM
        61°
        Additional Conditions
        1. Pressure 30.12 in
        2. Visibility 8 miles
        3. Clouds Partly Cloudy
        4. Dew Point55°F
        5. Humidity 97%
        6. Rainfall 0 in
        7. Snow Depth 0 in
        KCCR Station History
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 63°F 76°F 101°F 1912
        4. Low 60°F 54°F 44°F 2008
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 76°F 101°F
        4. Low 60°F 54°F 47°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:53 AM 7:12 PM
        3. Civil Twilight 6:27 AM 7:38 PM
        4. Nautical Twilight 5:56 AM 8:09PM
        5. Astronomical Twilight 5:24 AM 8:40 PM
        1. Length of Visible Light 13h 11m
        2. Length of Day 12h 18m
        3. Tomorrow will be 2 minutes 25 seconds shorter
        1. Moon 2:40 PM 11:41 PM
        2. First Quarter50% 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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