Tarentum, PA Weather Forecast
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Tarentum Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Partly Sunny | Chance of T-Storm | Mostly Sunny | Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy |
| Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1143 AM EDT Sun Sep 13 2026 

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Issued: 718 AM EDT Sun Sep 13 2026
Key Messages
1) Showers will decrease in coverage through the predawn hours, with lingering low clouds and fog
2) Severe thunderstorms still possible Sunday afternoon and evening with a cold front, but the level of the threat is uncertain
3) A brief bout of dry weather returns early next week
Discussion
... KEY MESSAGE 1... Showers have continued to generate into the predawn hours thanks to upper divergence associated with a crossing shortwave trough, plus precipitable water values lingering in the 1...
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