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| Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Patchy Drizzle | Patchy Drizzle | Patchy Drizzle | Partly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 77°FHi: 25°C | Lo: 64°FLo: 18°C | Hi: 74°FHi: 23°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 64°FLo: 18°C | Hi: 74°FHi: 23°C | Lo: 65°FLo: 18°C | Hi: 78°FHi: 26°C | Lo: 66°FLo: 19°C | Hi: 80°FHi: 27°C | Lo: 67°FLo: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1133 PM PDT Sat Sep 19 2026 
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Issued: 455 AM PDT Sun Sep 20 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
The 00z sounding Saturday afternoon shows a well mixed marine boundary layer, around 2500 feet deep with an inversion up to 5,000 feet and very dry air within and above it. Patchy low clouds are expected to fill over the lowlands of San Diego and Orange Counties as well as parts of the Inland Empire through this morning. Th...