Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

66°F

19°C

Humidity 42%
Wind Speed N 4 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 18 Apr 11:28 AM PDT
Extended Forecast for

5 Miles W Brentwood CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. North wind 3 to 5 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. West southwest wind around 6 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers, mainly after 11am.  Partly sunny, with a high near 73. Southwest wind 6 to 9 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 73 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers.  Low around 56. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 11pm, then a chance of showers.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers.  Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. North wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 56. West southwest wind around 6 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 50. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
A 30 percent chance of showers, mainly after 11am. Partly sunny, with a high near 73. Southwest wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers. Low around 56. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 62. Chance of precipitation is 90%.
Tuesday Night
Showers likely and possibly a thunderstorm before 11pm, then a chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A chance of showers. Partly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Brentwood CA
 37.92°N 121.79°W (Elev. 400 ft)
11:27 am PDT Apr 18, 2026
12pm PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database