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      Castro Valley, CA

      Tue, Nov 17, 2026
      Tuesday
      Wed 11/18
      High 62°f
      24% Precip. / 0 in
      Partly to mostly cloudy. High 62F. Winds W at 5 to 10 mph.
      Tuesday night
      Wed 11/18
      Low 47°f
      43% Precip. / 0.09 in
      Partly cloudy skies early will give way to occasional showers later during the night. Low 47F. Winds ESE at 5 to 10 mph. Chance of rain 40%.
      Sunrise 6:50 AM
      Sunset 4:55 PM
      Moonrise 1:03 PM
      Moonset -
      First Quarter, 53% visible
      Hourly Forecast
      12AM
      49°
      1AM
      48°
      2AM
      47°
      3AM
      47°
      4AM
      46°
      5AM
      46°
      6AM
      45°
      6:50AM
      Sunrise
      7AM
      45°
      8AM
      48°
      9AM
      51°
      10AM
      54°
      11AM
      56°
      12PM
      58°
      1PM
      59°
      2PM
      60°
      3PM
      60°
      4PM
      59°
      4:55PM
      Sunset
      5PM
      57°
      6PM
      55°
      7PM
      54°
      8PM
      53°
      9PM
      52°
      10PM
      51°
      11PM
      51°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Mostly Clear
      49°F 47°F 13% 0in 23% 43°F 82% 4 mph NE 30.03in
      1:00 am
      Mostly Clear
      48°F 45°F 13% 0in 23% 43°F 83% 5 mph NE 30.03in
      2:00 am
      Mostly Clear
      47°F 45°F 12% 0in 25% 42°F 84% 5 mph NE 30.03in
      3:00 am
      Mostly Clear
      47°F 45°F 12% 0in 26% 42°F 85% 4 mph ENE 30.04in
      4:00 am
      Mostly Clear
      46°F 44°F 15% 0in 28% 42°F 85% 4 mph ENE 30.04in
      5:00 am
      Partly Cloudy
      46°F 44°F 14% 0in 31% 41°F 85% 4 mph ENE 30.04in
      6:00 am
      Partly Cloudy
      45°F 43°F 13% 0in 37% 41°F 87% 4 mph ENE 30.05in
      7:00 am
      Partly Cloudy
      45°F 43°F 12% 0in 44% 42°F 86% 4 mph E 30.05in
      8:00 am
      Partly Cloudy
      48°F 47°F 11% 0in 49% 43°F 82% 4 mph ESE 30.06in
      9:00 am
      Partly Cloudy
      51°F 50°F 9% 0in 55% 45°F 78% 4 mph SSW 30.07in
      10:00 am
      Partly Cloudy
      54°F 53°F 23% 0in 58% 45°F 72% 5 mph SW 30.07in
      11:00 am
      Mostly Cloudy
      56°F 55°F 23% 0in 61% 46°F 69% 6 mph WSW 30.06in
      12:00 pm
      Mostly Cloudy
      58°F 56°F 23% 0in 64% 46°F 64% 7 mph WSW 30.05in
      1:00 pm
      Mostly Cloudy
      59°F 58°F 24% 0in 65% 46°F 61% 8 mph W 30.03in
      2:00 pm
      Mostly Cloudy
      60°F 59°F 24% 0in 66% 46°F 59% 8 mph W 30.02in
      3:00 pm
      Mostly Cloudy
      60°F 59°F 24% 0in 66% 46°F 59% 8 mph WNW 30.01in
      4:00 pm
      Mostly Cloudy
      59°F 58°F 22% 0in 64% 47°F 63% 8 mph WNW 30in
      5:00 pm
      Mostly Cloudy
      57°F 56°F 22% 0in 69% 45°F 64% 7 mph WNW 30.03in
      6:00 pm
      Mostly Cloudy
      55°F 54°F 23% 0in 63% 45°F 70% 5 mph NW 30.03in
      7:00 pm
      Partly Cloudy
      54°F 53°F 24% 0in 58% 45°F 73% 4 mph NNW 30.04in
      8:00 pm
      Partly Cloudy
      53°F 52°F 24% 0in 55% 45°F 76% 4 mph ESE 30.04in
      9:00 pm
      Partly Cloudy
      52°F 50°F 24% 0in 54% 45°F 77% 6 mph ESE 30.04in
      10:00 pm
      Partly Cloudy
      51°F 49°F 24% 0in 55% 45°F 78% 6 mph ESE 30.03in
      11:00 pm
      Partly Cloudy
      51°F 48°F 24% 0in 59% 44°F 79% 7 mph ESE 30.03in
      Additional Conditions
      1. Pressure 30.16 in
      2. Visibility 9 miles
      3. Clouds Cloudy
      4. Dew Point53°F
      5. Humidity 85%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      KHWD Station History
      Almanac for November 8, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 72°F 67°F 82°F 1955
      4. Low 51°F 49°F 35°F 1947
      5. Rain/Snow Depth
      6. Precipitation 0 in 4.7 in -
      7. Snow 0 in 0.1 in -
      Almanac for November 9, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 72°F 67°F 82°F
      4. Low 51°F 49°F 34°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 6:41 AM 5:02 PM
      3. Civil Twilight 6:13 AM 5:30 PM
      4. Nautical Twilight 5:42 AM 6:01PM
      5. Astronomical Twilight 5:11 AM 6:32 PM
      1. Length of Visible Light 11h 16m
      2. Length of Day 10h 21m
      3. Tomorrow will be 1 minute 57 seconds shorter
      1. Moon 6:15 AM 4:25 PM
      2. New0% of the Moon is Illuminated
      Nov 8
      New Moon
      Nov 17
      Waxing Half First Qtr
      Nov 24
      Full Moon
      Nov 30
      Waning Half Last Qtr
      Nearby Weather Stations
      Station Location
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
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      Level Access
      Glossary