Rock City, California Weather
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Weather Forecast for Rock City, California : Contra Costa County
Issued: 1:26 am PDT Oct 18, 2025 Latitude: 37.8496476 Longitude: -121.9355143 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Clear on Overnight Sunny on Saturday Sunny on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Patchy Fog on Thursday Partly Sunny on Friday
Low: 51°F High: 79°F High: 78°F High: 78°F High: 78°F High: 72°F High: 73°F High: 72°F
Low: 53°F Low: 52°F Low: 53°F Low: 52°F Low: 49°F Low: 51°F  
Clear Sunny Sunny Sunny Sunny Mostly Sunny Patchy Fog Partly Sunny
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Current Conditions at
CONCORD - (KCCR)
54°
Clear
as of 2:53 AM PDST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LIVERMORE - (KLVK)
54°
Clear
as of 2:53 AM PDST
Rel. Humidity: 81%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
HAYWARD - (KHWD)
57°
Clear
as of 2:54 AM PDST
Rel. Humidity: 82%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
060° Northeast
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around 51. East northeast wind around 7 mph.
Sunny on Saturday Saturday... Sunny, with a high near 79. East northeast wind 5 to 9 mph becoming west southwest in the afternoon.
Clear on Saturday Night Saturday Night... Clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.
Sunny on Sunday Sunday... Sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the morning.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 52. Light and variable wind becoming north northeast 16 to 21 mph after midnight. Winds could gust as high as 24 mph.
Sunny on Monday Monday... Sunny, with a high near 78. Breezy.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 53.
Sunny on Tuesday Tuesday... Sunny, with a high near 78.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 52.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 72.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 49.
Patchy Fog on Thursday Thursday... Patchy fog. Otherwise, mostly sunny, with a high near 73.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 51.
Partly Sunny on Friday Friday... Partly sunny, with a high near 72.
Sun Almanac for Rock City, California
Sunrise: 07:20 AM
Sunset: 6:26 PM
Civil Sunrise:06:53 AM
Civil Sunset: 6:52 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 7:23 PM
Astro Sunrise: 05:52 AM
Astro Sunset: 7:53 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.