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Erdenheim Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | | |  | | | | |
| Mostly Cloudy | Chance of T-Storm | Showers Likely | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C |
| POP: 70% | POP: 70% | POP: 30% | POP: 30% | POP: 40% | POP: 40% | POP: 30% | POP: 30% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Sat Sep 19 2026 
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Issued: 114 AM EDT Sun Sep 20 2026
Key Messages
1. Low pressure and a cold front move through the region tonight into Sunday with rain showers likely.
2. A stationary front south of the region could keep rain chances around, especially for Delmarva through mid week.
3. A closed mid-level low ejecting from the Ohio Valley could help to spin up surface low pressure off our coast by Thursday, potentially bringing another chance for rain, and increasing the risk for coastal flooding.
Discussion
... KEY MESSAGE 1...Low pressure and a cold ...