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Chapman Lake, PA Weather Forecast
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Chapman Lake Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | |  |  |  |  |  |  |  | | |
| Chance of Showers | Patchy Fog | Patchy Fog | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Partly Sunny | Partly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 40% | POP: 40% | POP: 80% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 335 AM EDT Tue Aug 25 2026 
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Issued: 152 AM EDT Tue Aug 25 2026
Key Messages
1) Scattered showers continue today and will be most widespread during the afternoon before tapering off this evening.
2) High pressure builds in for a brief lull in wet weather Wednesday, then additional showers and thunderstorms are expected to return Thursday into Friday before drying back out heading into the weekend.
Discussion
... KEY MESSAGE 1...
The upper level trough and closed low that have been impacting the area the past few days will finally shift off to our north and east t...