| National Weather Service Forecast for:
Clearlake CA Issued by: National Weather Service Eureka, CA |
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| Updated: 2:10 pm PDT Mar 19, 2026 | ||||||||||||||||||
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| Tonight |
Clear, with a low around 47. Light north northwest wind. |
| Friday |
Sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon. |
| Friday Night |
Partly cloudy, with a low around 50. Northwest wind 5 to 7 mph. |
| Saturday |
Mostly sunny, with a high near 85. Calm wind becoming west 5 to 7 mph in the afternoon. |
| Saturday Night |
Mostly clear, with a low around 50. West wind 5 to 9 mph becoming calm in the evening. |
| Sunday |
Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon. |
| Sunday Night |
Partly cloudy, with a low around 51. |
| Monday |
Mostly sunny, with a high near 85. |
| Monday Night |
Partly cloudy, with a low around 51. |
| Tuesday |
Sunny, with a high near 79. |
| Tuesday Night |
Partly cloudy, with a low around 48. |
| Wednesday |
Sunny, with a high near 76. |
| Wednesday Night |
Partly cloudy, with a low around 48. |
| Thursday |
Mostly sunny, with a high near 79. |
Forecast from NOAA-NWS for Clearlake CA.
