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Old Mountain Trail, PA Weather Forecast
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Old Mountain Trail Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  |  | |  | | | | |
| Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C |
| POP: 50% | POP: 20% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 730 PM EDT Sun Aug 23 2026 
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Old Mountain Trail Forecast Discussion
Issued: 245 PM EDT Sun Aug 23 2026
Key Messages
1) Upper low over the Upper Great Lakes will move southeast tonight then bounce to the northeast Monday. Showers and thunderstorms will move through the region periodically through Monday night.
Discussion
... KEY MESSAGE 1: Upper low over the Upper Great Lakes will move southeast tonight then bounce to the northeast Monday. Showers and thunderstorms will move through the region periodically through Monday night.
Showers and thunderstorms are spread across all of the CWA, even as far S ...