Altadena, CA Weather Forecast
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Altadena Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Sunny | Fog | Sunny | Mostly Cloudy | Sunny | Fog | Sunny | Chance of Showers | Chance of Showers | Mostly Clear | Sunny | Clear |
| Hi: 90°FHi: 32°C | Lo: 66°FLo: 19°C | Hi: 86°FHi: 30°C | Lo: 66°FLo: 19°C | Hi: 83°FHi: 28°C | Lo: 63°FLo: 17°C | Hi: 80°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 67°FLo: 19°C | Hi: 90°FHi: 32°C | Lo: 67°FLo: 19°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 201 AM PDT Fri Sep 25 2026 

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Issued: 515 AM PDT Fri Sep 25 2026
Aviation
...25/1212Z.
Around 12Z at KLAX, the marine layer was 1000 ft deep. The top of the inversion was at 2600 feet with a temperature of 25 C.
High confidence in VFR TAFs for KPRB, KPMD, and KWJF.
Moderate confidence in remainder of TAFs. Timing of flight cat changess may be off by +/- 3 hours. There is a 20% chance of IFR conds at KBUR and KVNY through 17Z Fri. There is a 30% chance of conds at KOXR, KCMA, and KSBA after 08Z Fri, and a 30% Chance of VFR conds Friday night.
KLAX...High confidence...
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