Commonwealth Security Systems, PA Weather Forecast
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Commonwealth Security Systems Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Partly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Sunny |
| Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C |
| POP: 40% | POP: 40% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 130 AM EDT Wed Sep 30 2026 

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Issued: 129 AM EDT Wed Sep 30 2026
Key Messages
1) Cloud cover a real challenge for the overnight, and will have a big effect on temps and fog formation.
2) Noticeable warmup and several days of dry conditions to end September and start October
3) Cooling trend this weekend into early next week with an increasing chance of rain Saturday and Sunday.
Discussion
... KEY MESSAGE 1: Cloud cover a real challenge for the overnight, and will have a big effect on temps and fog formation.
Clouds hanging in for now, but are showing signs of thinn...
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