Upper St Clair, PA Weather Forecast

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Upper St Clair, PA Weather Forecast

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Upper St Clair PA weather  - Clear - 58°F
Clear
58°F
Updated 7:07 pm
Feels Like 49°F
Humidity 49%
Wind N 0 mph
Barometer  30.34 in
Dew Point 39°F
Upper St Clair PA weather  - Clear - 14°C
Clear
14°C
Updated 7:07 pm
Feels Like 9°C
Humidity 49%
Wind N 0 km/h
Barometer  102.7 kPa
Dew Point 4°C

Upper St Clair Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Upper St Clair, PA Weather - Tonight Clear Upper St Clair, PA Weather - Saturday Sunny Upper St Clair, PA Weather - Saturday Night Patchy Fog Upper St Clair, PA Weather - Sunday Patchy Fog Upper St Clair, PA Weather - Sunday Night Patchy Fog Upper St Clair, PA Weather - Monday Patchy Fog Upper St Clair, PA Weather - Monday Night Clear Upper St Clair, PA Weather - Tuesday Partly Cloudy Upper St Clair, PA Weather - Tuesday Night Partly Cloudy Upper St Clair, PA Weather - Wednesday Partly Sunny Upper St Clair, PA Weather - Wednesday Night Partly Cloudy Upper St Clair, PA Weather - Thursday Mostly Sunny
Clear Sunny Patchy Fog Patchy Fog Patchy Fog Patchy Fog Clear Partly Cloudy Partly Cloudy Partly Sunny Partly Cloudy Mostly Sunny
Lo: 39°FLo: 4°C Hi: 65°FHi: 18°C
Lo: 39°FLo: 4°C Hi: 65°FHi: 18°C
Lo: 39°FLo: 4°C Hi: 69°FHi: 21°C
Lo: 41°FLo: 5°C Hi: 65°FHi: 18°C
Lo: 45°FLo: 7°C Hi: 69°FHi: 21°C
Lo: 45°FLo: 7°C Hi: 70°FHi: 21°C
POP = Probability of Precipitation.
Weather Outlook Updated: 607 PM EDT Fri Oct 23 2026 Upper St Clair, PA Weather - WeatherWorld.com

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Upper St Clair Forecast Discussion

Meteorlogic Glosserator
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Issued: 640 PM EDT Fri Oct 23 2026

Key Messages

1) Above normal temperature with dry weather highly likely until at least late next week.


Discussion

... KEY MESSAGE 1... Ensemble model analysis remains firm on upper ridging and surface high pressure dominating the weather pattern over the upper Ohio River Valley for much of the next week plus. Any daily variations arise from shifts on the center placement of the high and/or passage of shortwaves north of the region. The result is consistently above normal temperature (ranging from a...