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Arce Park Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear |
| Hi: 80°FHi: 27°C | Lo: 67°FLo: 19°C | Hi: 77°FHi: 25°C | Lo: 66°FLo: 19°C | Hi: 76°FHi: 24°C | Lo: 64°FLo: 18°C | Hi: 74°FHi: 23°C | Lo: 63°FLo: 17°C | Hi: 74°FHi: 23°C | Lo: 63°FLo: 17°C | Hi: 77°FHi: 25°C | Lo: 66°FLo: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1210 AM PDT Sat Sep 12 2026 
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Issued: 118 AM PDT Sat Sep 12 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
Nighttime satellite currently shows patchy low clouds caught in the flow of a weak coastal eddy drifting into coastal Orange County. Clouds should eventually fill in over coastal areas overnight with greater inland coverage to the western valleys (and patchy fog) in the following nights.
The ridge that spiked coastal temperatures over the past week continue...