Macungie Mack, PA Weather Forecast
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Macungie Mack Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
| Isolated Showers | Thunderstorms | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Sunny |
| Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C |
| POP: 20% | POP: 20% | POP: 30% | POP: 70% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 241 AM EDT Mon Aug 24 2026 

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Macungie Mack Forecast Discussion
Issued: 240 AM EDT Mon Aug 24 2026
Key Messages
1. High pressure will slowly build towards the region through Wednesday.
2. A warm front on Thursday, will be followed very closely by a cold front Friday into Saturday, resulting in unsettled weather at the end of the week.
Discussion
... KEY MESSAGE 1...High pressure will slowly build towards the region through Wednesday.
High pressure is expected to slowly build towards the region. However, the main mid and upper level low which was responsible for the unsettled weather over the past ...
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