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Cajon Junction Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  | | |  |  | | |  |  |
| Clear | Mostly Sunny | Mostly Clear | Chance of T-Storm | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Lo: 55°FLo: 13°C | Lo: 52°FLo: 11°C | Lo: 49°FLo: 9°C | |||||||||
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 137 PM PDT Tue Sep 22 2026 
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Issued: 121 PM PDT Tue Sep 22 2026
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...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
Sunnier skies are expected this afternoon with high temperatures running near to up to 7 degrees warmer than yesterday. The marine layer is expected to get shallower over the next few nights, staying mostly confined the the coast. Conditions will warm through the middle of the week.
Wednesday, high temperatures will warm 5 to 12 degrees for the valleys, wit...