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Serrano High School Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | | | | | | | |
| Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny |
| Lo: 63°FLo: 17°C | Hi: 91°FHi: 33°C | Lo: 62°FLo: 17°C | Hi: 87°FHi: 31°C | Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 64°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 66°FLo: 19°C | Hi: 93°FHi: 34°C | Lo: 67°FLo: 19°C | Hi: 92°FHi: 33°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1155 AM PDT Sat Sep 19 2026 
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Issued: 523 PM PDT Sat Sep 19 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
Not much change to the forecast over the past 24 hours. In the short term, upper level riding will allow for temperatures to warm closer to normal today, with highs in the mid 70s along the coast, 80s for inland spots and High Desert, and around 100 for the lower deserts. Afternoon humidity will fall to around 10% for areas...