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Otay Mesa, CA Weather Forecast
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Otay Mesa Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | | |  |  | | | | | | |
| Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 74°FLo: 23°C | Hi: 100°FHi: 38°C | Lo: 72°FLo: 22°C | Hi: 98°FHi: 37°C | Lo: 74°FLo: 23°C | Hi: 97°FHi: 36°C | Lo: 71°FLo: 22°C | Hi: 94°FHi: 34°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 83°FHi: 28°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1246 PM PDT Sun Oct 04 2026 
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Issued: 1147 AM PDT Sun Oct 4 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
Weaker Santa Ana winds have been observed this morning, mainly below 35 MPH. This pattern has contributed to very hot temperatures this morning for areas west of the mountains. Valley and coastal locations are close to 95-100 degrees. Subtle increases in onshore flow and a weakening of the high pressure system overhead will allow increased onshore flow clo...