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Upper St Clair, PA 7-Day Night Weather Forecast
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Upper St Clair, PA Weather Forecast
Upper St Clair, PA Weather Forecast Date: 743 PM EDT Wed Oct 21 2026
The area/counties/county of: Allegheny, including the city of Pittsburgh Metro Area.or toggle through each period.
Rest of Tonight... Clear. Patchy frost. Lows in the mid 30s. Light and variable winds.
Thursday... Patchy frost in the morning. Mostly sunny. Highs in the mid 60s. North winds 5 to 10 mph.
Thursday Night... Mainly clear. Lows in the lower 40s. North winds around 5 mph.
Friday... Partly cloudy in the morning, then clearing. Highs in the lower 60s. Northeast winds around 5 mph.
Friday Night... Clear. Lows in the mid 30s. East winds around 5 mph.
Saturday... Sunny. Highs in the mid 60s.
Saturday Night... Clear. Lows in the mid 30s.
Sunday... Sunny. Highs in the mid 60s.
Sunday Night... Mainly clear. Lows in the upper 30s.
Monday... Mostly sunny. Highs in the upper 60s.
Monday Night... Partly cloudy. Lows in the lower 40s.
Tuesday... Partly sunny. Highs in the mid 60s.
Tuesday Night... Mostly cloudy. Lows in the lower 40s.
POP = Probability of Precipitation
Upper St Clair Radar Loop
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