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Hillside High School Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  |  |  | | | | | | |
| Partly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Sunny | Clear | Sunny | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy |
| Lo: 57°FLo: 14°C | Hi: 84°FHi: 29°C | Lo: 57°FLo: 14°C | Hi: 84°FHi: 29°C | Lo: 57°FLo: 14°C | Hi: 87°FHi: 31°C | Lo: 59°FLo: 15°C | Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C | Lo: 58°FLo: 14°C | Hi: 86°FHi: 30°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1125 AM PDT Tue Sep 15 2026 
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Issued: 1152 AM PDT Tue Sep 15 2026
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...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
An area of low pressure is beginning to form near Seattle and Vancouver. This system will work its way southward through Thursday, bringing in cooler than average temperatures, breezy conditions across the mountains and deserts, and a healthier marine layer. Low clouds will fill in much of the coastal basin each night and morning with patchy fog on higher ...