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

70°F

21°C

Humidity 34%
Wind Speed S 8 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 19 Apr 04:28 PM PDT
Extended Forecast for

2 Miles WSW Bethel Island CA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West wind 13 to 18 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 24 mph.

    Low: 50 °F

    Decreasing
    Clouds

  • Monday

    Monday: A slight chance of rain before 9am, then a chance of rain after 1pm.  Partly sunny, with a high near 70. Southeast wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Slight Chance
    Rain then
    Chance Rain

  • Monday Night

    Monday Night: Rain.  Low around 56. West wind 7 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Rain

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am.  High near 59. East southeast wind 6 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 22 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm.  Mostly cloudy, with a low around 52. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely then
    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before 11am.  Mostly sunny, with a high near 63.

    High: 63 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West wind 13 to 18 mph becoming south 5 to 10 mph after midnight. Winds could gust as high as 24 mph.
Monday
A slight chance of rain before 9am, then a chance of rain after 1pm. Partly sunny, with a high near 70. Southeast wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. Low around 56. West wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am. High near 59. East southeast wind 6 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 52. South southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of rain, mainly before 11am. Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 53.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Bethel Island CA
 38.02°N 121.7°W (Elev. 3 ft)
1:26 pm PDT Apr 19, 2026
5pm PDT Apr 19, 2026-6pm PDT Apr 26, 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