Sylvan Park, CA Weather Forecast
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Sylvan Park Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Partly Cloudy | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Sunny | Mostly Clear |
| Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 94°FHi: 34°C | Lo: 74°FLo: 23°C | Hi: 86°FHi: 30°C | Lo: 67°FLo: 19°C | Hi: 83°FHi: 28°C | Lo: 65°FLo: 18°C | Hi: 87°FHi: 31°C | Lo: 67°FLo: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1215 AM PDT Thu Sep 24 2026 

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Issued: 439 AM PDT Thu Sep 24 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 weak upper level low pressure system off the coast of northern Baja will bring an increase in mid-level monsoonal moisture today with a slight chance of showers for the mountains for this afternoon. This moisture will then decrease for tonight and Friday with the drying continuing i...
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