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Sinclair Commercial Block Heritage Site, CA Weather Forecast
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Sinclair Commercial Block Heritage Site Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | |  | | | | | |  | | |
| Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Chance of Showers | Mostly Clear | Mostly Sunny |
| Lo: 70°FLo: 21°C | Hi: 101°FHi: 38°C | Lo: 69°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 69°FLo: 21°C | Hi: 102°FHi: 39°C | Lo: 69°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 69°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 70°FLo: 21°C | Hi: 101°FHi: 38°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1146 AM PDT Wed Aug 19 2026 
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Sinclair Commercial Block Heritage Site Forecast Discussion
Issued: 915 PM PDT Wed Aug 19 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION for 06Z CYCLE...
This afternoon, clear skies are prevailing across the region. The ridge is at its maximum westward reach today, yielding the hottest temperatures for the inland valleys this week. Widespread 100F to 105F readings are anticipated across the Inland Empire with mid to upper 90s in th...