Library Park, CA Weather Forecast
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Library Park Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Patchy Fog | Patchy Fog | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy |
| Lo: 67°FLo: 19°C | Hi: 84°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 63°FLo: 17°C | Hi: 80°FHi: 27°C | Lo: 62°FLo: 17°C | Hi: 80°FHi: 27°C | Lo: 63°FLo: 17°C | Hi: 84°FHi: 29°C | Lo: 64°FLo: 18°C | Hi: 87°FHi: 31°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1120 AM PDT Sat Sep 12 2026 

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Issued: 1040 AM PDT Sat Sep 12 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
The ridge that spiked coastal temperatures over the past week continues to move inland into the south central US. This has increased the depth of our marine layer influence to reach into the interior valleys with overnight humidities reaching 80-100% in these lower areas for the next few nights.
Today`s temperatures will be ...
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