Weather WorldSan Jacinto, CA Weather Forecast
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San Jacinto Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | | | |  | | | | | | |
| Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Partly Cloudy | Mostly Clear | Mostly Sunny | Clear | Sunny | Clear | Sunny |
| Lo: 59°FLo: 15°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 97°FHi: 36°C | Lo: 64°FLo: 18°C | Hi: 101°FHi: 38°C | Lo: 71°FLo: 22°C | Hi: 101°FHi: 38°C | Lo: 71°FLo: 22°C | Hi: 100°FHi: 38°C | Lo: 70°FLo: 21°C | Hi: 99°FHi: 37°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1227 PM PDT Tue Sep 29 2026 
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Issued: 438 PM PDT Tue Sep 29 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
Tonight through Wednesday...
An upper level low is continuing to exit the southwestern region, with northerly flow filtering in behind it. These winds will translate to weak off shore winds mixing in overnight, which will help to impede the development of the marine layer overnight. There may still be some patchy areas of lo...