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Borough of Saint Clair, PASt. Clair, PA 7-Day Weather Forecast
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St. Clair Weather Forecast
St. Clair, PA Weather Forecast Date: 301 AM EDT Fri Sep 25 2026
Weather forecast for St. Clair, PA
Tonight Lo: 45°F Lo: 7°C |
Tonight... Partly cloudy. Near steady temperature in the mid 40s. North winds around 5 mph. |
Fri Hi: 70°FHi: 21°C Lo: 51°F Lo: 11°C |
Friday... Mostly sunny. Highs around 70. North winds 5 to 10 mph with gusts up to 25 mph. |
Sat Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Saturday... Mostly cloudy with a 50% chance of rain. Highs in the mid 60s. North winds 10 to 15 mph with gusts up to 30 mph. |
Sun Hi: 65°FHi: 18°C Lo: 55°F Lo: 13°C |
Sunday... Rain likely. Highs in the mid 60s. Chance of rain 70%. |
Mon Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Monday... Mostly cloudy. Highs in the upper 60s. |
| Tue Hi: 70°FHi: 21°C Lo: 51°F Lo: 11°C |
Tuesday... Partly sunny. Highs around 70. |
| Wed Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Wednesday... Mostly sunny. Highs in the lower 70s. |
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