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Smiley Heights Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
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| Patchy Fog | Patchy Fog | Mostly Sunny | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear |
| Hi: 83°FHi: 28°C | Lo: 56°FLo: 13°C | Hi: 84°FHi: 29°C | Lo: 58°FLo: 14°C | Hi: 90°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 57°FLo: 14°C | Hi: 88°FHi: 31°C | Lo: 59°FLo: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1207 AM PDT Thu Sep 17 2026 
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Issued: 434 AM PDT Thu Sep 17 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
.SHORT TERM (Today through Saturday)... A low pressure system centered across northern California will maintain high temperatures as much as 5 to 10 degrees below average for the inland valleys today. The low pressure system will move inland on Friday with weak high pressure moving across California on Saturday. High temper...