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Upper Perkiomen Valley County Park, PA Weather Forecast
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Upper Perkiomen Valley County Park Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  |  | | |  | | | |
| Chance of T-Storm | Chance of T-Storm | Patchy Fog | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C |
| POP: 80% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 AM EDT Thu Aug 27 2026 
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Issued: 713 AM EDT Thu Aug 27 2026
Key Messages
1. A warm front on Thursday will bring the next chance for widespread rain.
2. A cold front is expected to follow close behind on Friday.
Discussion
... KEY MESSAGE 1...A warm front tomorrow will bring the next chance for widespread rain.
Early morning convection has not been initialized well by the CAMs with many of the 06Z guidance missing it entirely. Ironically, the previous 00Z and 18Z guidance hi res runs displayed the morning convection a bit earlier. Right now, the greatest threa...