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Diamond, California Weather Forecast
Diamond, California Weather
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Weather Forecast for Diamond, California : Contra Costa County
Issued: 12:26 am PST Dec 18, 2025 Latitude: 38.0215875 Longitude: -121.8932918 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Cloudy on Overnight Morning Fog on Thursday 80% chance of rain on Friday 70% chance of rain on Saturday Thunderstorms on Sunday 70% chance of rain on Monday 70% chance of rain on Tuesday 70% chance of rain on Wednesday
Low: 48°F High: 59°F High: 58°F High: 56°F High: 58°F High: 55°F High: 51°F High: 53°F
Low: 51°F Low: 55°F Low: 55°F Low: 54°F Low: 50°F Low: 50°F  
Cloudy Morning Fog Rain Rain Thunderstorms Rain Rain Rain
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Current Conditions at
CONCORD - (KCCR)
52°
Cloudy
Mist
as of 12:53 AM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 5 Miles
Pressure: 30.16 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1500ft
Current Conditions at
TRAVIS AFB - (KSUU)
54°
Cloudy
Mist
as of 12:55 AM PST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 4 Miles
Pressure: 30.14 in.
Flight Rule: IFR
Wind Data
3 MPH
280° West
Cloud Level(s): Solid Overcast at 600ft
Current Conditions at
LIVERMORE - (KLVK)
54°
Cloudy
Mist
as of 12:53 AM PST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 1 1/4 Miles
Pressure: 30.14 in.
Flight Rule: LIFR
Wind Data
3 MPH
090° East
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
VACAVILLE - (KVCB)
54°
Cloudy
as of 12:53 AM PST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1600ft
Cloudy on Overnight Overnight... Cloudy, with a low around 48. West wind around 6 mph.

Morning Fog on Thursday Thursday... Patchy fog before 11am. Otherwise, partly sunny, with a high near 59. Light and variable wind.

30% chance of rain Thursday Night Thursday Night... A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 51. South wind around 6 mph.

80% chance of rain Friday Friday... Rain, mainly after 10am. High near 58. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

80% chance of rain Friday Night Friday Night... Rain, mainly before 4am. Low around 55. South southwest wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

70% chance of rain Saturday Saturday... Rain likely, mainly after 10am. Cloudy, with a high near 56. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of rain Saturday Night Saturday Night... Rain. Low around 55. Chance of precipitation is 90%.

Thunderstorms on Sunday Sunday... Showers and possibly a thunderstorm. Cloudy, with a high near 58.

Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 54.

70% chance of rain Monday Monday... Rain likely. Cloudy, with a high near 55.

70% chance of rain Monday Night Monday Night... Rain likely. Cloudy, with a low around 50.

70% chance of rain Tuesday Tuesday... Rain likely. Cloudy, with a high near 51.

Rain on Tuesday Night Tuesday Night... Rain. Cloudy, with a low around 50.

70% chance of rain Wednesday Wednesday... Rain likely. Cloudy, with a high near 53.

Current Radar Image


Sun Almanac for Diamond, California
Sunrise: 07:19 AM
Sunset: 4:50 PM
Civil Sunrise:06:49 AM
Civil Sunset: 5:20 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:53 PM
Astro Sunrise: 05:44 AM
Astro Sunset: 6:25 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.