Weather WorldUpper 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: 802 AM EDT Fri Oct 23 2026
The area/counties/county of: Allegheny, including the city of Pittsburgh Metro Area.or toggle through each period.
Today... Mostly sunny. Highs in the lower 60s. Northeast winds around 5 mph.
Tonight... Clear. Lows in the mid 30s. East winds around 5 mph.
Saturday... Patchy frost in the morning. Mostly sunny. Highs in the mid 60s. Southeast winds around 5 mph.
Saturday Night... Clear. Lows in the mid 30s. East winds around 5 mph.
Sunday... Patchy frost in the morning. Sunny. Highs in the mid 60s. Light and variable winds.
Sunday Night... Mainly clear. Lows in the upper 30s.
Monday... Mostly sunny. Highs in the upper 60s.
Monday Night... Mainly clear. Lows in the lower 40s.
Tuesday... Partly cloudy. Highs in the mid 60s.
Tuesday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 40s.
Wednesday... Partly sunny. Highs in the mid 60s.
Wednesday Night... Partly cloudy. Lows in the lower 40s.
POP = Probability of Precipitation
Upper St Clair Radar Loop
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