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Heim School Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  |  | | | | | | | |
| Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Patchy Fog | Mostly Clear | Patchy Fog | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 82°FHi: 28°C | Lo: 64°FLo: 18°C | Hi: 83°FHi: 28°C | Lo: 66°FLo: 19°C | Hi: 84°FHi: 29°C | Lo: 67°FLo: 19°C | Hi: 88°FHi: 31°C | Lo: 67°FLo: 19°C | Hi: 89°FHi: 32°C | Lo: 66°FLo: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 AM PDT Mon Sep 21 2026 
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Issued: 456 AM PDT Mon Sep 21 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
.SHORT TERM (Today through Wednesday)... A weak upper level low pressure system will move inland through central and southern California today with high temperatures a few to around 5 degrees cooler than Sunday and as much as 5 to 10 degrees below average for the valleys. High temperatures for today will range from the lowe...