Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

51°F

11°C

Humidity 99%
Wind Speed NE 1 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 11 Apr 12:28 AM PDT
Extended Forecast for

2 Miles WSW Bethel Island CA

  • Overnight

    Overnight: A 30 percent chance of rain, mainly before 3am.  Partly cloudy, with a steady temperature around 58. South wind around 7 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance Rain

  • Saturday

    Saturday: Rain and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Increasing clouds, with a high near 63. South southeast wind 8 to 18 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly before midnight, then showers likely and possibly a thunderstorm after 3am.  Low around 50. South wind 10 to 17 mph, with gusts as high as 28 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 58. Southwest wind 13 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 11pm.  Partly cloudy, with a low around 47. South southwest wind 5 to 14 mph, with gusts as high as 22 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance Rain
    then Mostly
    Clear

  • Monday

    Monday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly before 3am. Partly cloudy, with a steady temperature around 58. South wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 63. South southeast wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms, mainly before midnight, then showers likely and possibly a thunderstorm after 3am. Low around 50. South wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm. High near 58. Southwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 47. South southwest wind 5 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Bethel Island CA
 38.02°N 121.7°W (Elev. 3 ft)
11:27 pm PDT Apr 10, 2026
1am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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