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City of Clairton, PAClairton, PA Weather Forecast
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Clairton Weather Forecast
| THIS AFTERNOON | TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | | |  |  | |  |  |  | | |
| Mostly Sunny | Clear | Mostly Sunny | Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Showers | Showers Likely | Chance of Showers | Partly Cloudy | Clear |
| Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C |
| POP: 70% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 203 PM EDT Sun Sep 06 2026 
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Issued: 111 PM EDT Sun Sep 6 2026
Key Messages
1) High pressure and a drier air mass provides quiet weather and seasonable temperatures through the holiday weekend. A warming trend during the first half of the week with the next cold front likely to arrive by Wednesday night.
Discussion
... KEY MESSAGE 1... Surface high pressure builds from south-central Canada into the Great Lakes region and extending into the upper Ohio Valley regions. This will result in northeast surface winds which will locally ushering in lower dewpoints and ...