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Valley Forge National Historic ParkValley Forge, PA Weather Forecast
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Valley Forge Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  |  |  | | | | |  | | |
| Mostly Clear | Sunny | Partly Cloudy | Partly Sunny | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C |
| POP: 30% | POP: 40% | POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Tue Sep 15 2026 
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Issued: 723 PM EDT Tue Sep 15 2026
Key Messages
1. Mainly quiet this week with high pressure in control.
2. Somewhat unsettled weather will be possible at times late this week and next weekend as multiple systems move through. However at this point significant impacts due not appear likely.
Discussion
... KEY MESSAGE 1...Dry and tranquil weather will persist through at least Thursday with a gradual warming trend.
An expansive area of high pressure will remain in control through Thursday resulting in a stretch of nice mid-September day...