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Polytechnic High School Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Fog | Partly Cloudy | Fog | Sunny | Partly Cloudy | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 76°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 70°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 76°FHi: 24°C | |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM PDT Mon Sep 21 2026 
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Issued: 500 PM PDT Mon Sep 21 2026
Aviation
...21/2359Z.
At 2355Z at KLAX, the marine layer was 3700 ft deep. The top of the inversion was at 5800 feet with a temperature of 15 C.
High confidence in VFR conds for KPMD & KWJF.
Low to moderate confidence in the remaining sites. Arrival of cigs tonight may be off by 3 hours, and confidence is low in min cig heights, where TAFs may be off my one category. There is a chance for no cigs tonight at KOXR/KCMA (40%),KLAX/KLGB/KSMO (20%). There is a 20% chance for brief IFR-MVFR cigs at KSBA a...