| National Weather Service Forecast for:
Bethel Island CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: 12:46 am PDT Aug 20, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 60. West wind around 7 mph. |
| Thursday |
Mostly sunny, with a high near 87. West northwest wind 6 to 11 mph, with gusts as high as 20 mph. |
| Thursday Night |
Partly cloudy, with a low around 59. West wind 6 to 10 mph. |
| Friday |
Mostly sunny, with a high near 86. West wind 5 to 14 mph, with gusts as high as 22 mph. |
| Friday Night |
Mostly clear, with a low around 59. West southwest wind 9 to 13 mph, with gusts as high as 22 mph. |
| Saturday |
Sunny, with a high near 87. |
| Saturday Night |
Mostly clear, with a low around 58. |
| Sunday |
Sunny, with a high near 88. |
| Sunday Night |
Mostly clear, with a low around 59. |
| Monday |
Mostly sunny, with a high near 86. |
| Monday Night |
Mostly clear, with a low around 58. |
| Tuesday |
Mostly sunny, with a high near 87. |
| Tuesday Night |
Partly cloudy, with a low around 58. |
| Wednesday |
Mostly sunny, with a high near 89. |
Forecast from NOAA-NWS for Bethel Island CA.
