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Mesa Grande School, CA Weather Forecast
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Mesa Grande School Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | | | | | | | |
| Clear | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 71°FLo: 22°C | Hi: 97°FHi: 36°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 97°FHi: 36°C | Lo: 73°FLo: 23°C | Hi: 100°FHi: 38°C | Lo: 73°FLo: 23°C | Hi: 100°FHi: 38°C | Lo: 73°FLo: 23°C | Hi: 100°FHi: 38°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1134 AM PDT Sat Aug 22 2026 
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Mesa Grande School Forecast Discussion
Issued: 1113 AM PDT Sat Aug 22 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
A couple of record high minimum temperatures were set yesterday as moisture aloft and high clouds inhibit radiation cooling at night. A few high clouds continue this morning as patchy marine layer low clouds form over the coastal areas.
Numerical models remain in good agreement with respect to the synoptic pattern. The domin...