Current Conditions

Upper Saint Clair, Pennsylvania

75°F24°C

Showers

Wind

SSW 6 mph10 km/h

Humidity

88%

Cloud Cover

47%

As of Thursday, September 3, 2026 at 1:54 AM EDT

Today's Outlook

Day

Mostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C — feels like 95°F35°C. Light wind from the SW around 6 mph9 km/h. 51% chance of showers throughout the day. Heavy, humid air.

Night

Mostly cloudy, with a low around 73°F23°C. Light wind from the SW around 5 mph8 km/h. 68% chance of showers throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 88°F31°CFeels 95°F35°C	Low 73°F23°C	Precip 0.41 in10.3 mm68%	Cloud 66%	Wind SW 5 mph9 km/h	Thursday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C — feels like 95°F35°C. Light wind from the SW around 6 mph9 km/h. 51% chance of showers throughout the day. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 73°F23°C. Light wind from the SW around 5 mph8 km/h. 68% chance of showers throughout the night.
Showers	High 83°F28°CFeels 87°F31°C	Low 70°F21°C	Precip 0.29 in7.4 mm74%	Cloud 69%	Wind W 4 mph7 km/h	Friday: Overcast and warm, with a high of 83°F28°C and morning low of 71°F21°C. Light wind from the W around 4 mph7 km/h. 74% chance of light rain throughout the day. Heavy, humid air. Friday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the W around 4 mph6 km/h. 59% chance of showers throughout the night.
Drizzle	High 79°F26°C	Low 66°F19°C	Precip 0.04 in1.1 mm24%	Cloud 55%	Wind N 5 mph8 km/h	Saturday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Light wind from the N around 5 mph8 km/h. 24% chance of drizzle throughout the day. Saturday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the N around 5 mph8 km/h. 13% chance of drizzle overnight.
Clear	High 78°F26°C	Low 60°F16°C	Precip 0 in0 mm—	Cloud 27%	Wind NE 6 mph9 km/h	Sunday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 60°F16°C. Light wind from the NE around 6 mph9 km/h. Sunday Night: Mostly clear, with a low around 60°F16°C. Light wind from the NE around 6 mph9 km/h.
Partly Cloudy	High 80°F27°C	Low 60°F15°C	Precip 0 in0 mm—	Cloud 43%	Wind E 5 mph8 km/h	Monday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Light wind from the E around 4 mph7 km/h. Monday Night: Partly cloudy, with a low around 60°F15°C. Light wind from the ENE around 6 mph9 km/h.
Partly Cloudy	High 84°F29°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 61%	Wind SE 5 mph7 km/h	Tuesday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 62°F17°C. Light wind from the SSE around 4 mph6 km/h. Tuesday Night: Mostly cloudy, with a low around 61°F16°C. Light wind from the ESE around 5 mph8 km/h.
Drizzle	High 87°F31°CFeels 90°F32°C	Low 67°F19°C	Precip 0.04 in1 mm13%	Cloud 58%	Wind SSW 7 mph11 km/h	Wednesday: Mostly cloudy and hot, with a high of 87°F31°C and morning low of 68°F20°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 13% chance of drizzle in the morning. Humid. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. 13% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdaySep 3	88°F31°C Feels 95°F35°C	73°F23°C	0.41 in10.3 mm· 68%	66%	Showers	SW 5 mph9 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C — feels like 95°F35°C. Light wind from the SW around 6 mph9 km/h. 51% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 73°F23°C. Light wind from the SW around 5 mph8 km/h. 68% chance of showers throughout the night.
	FridaySep 4	83°F28°C Feels 87°F31°C	70°F21°C	0.29 in7.4 mm· 74%	69%	Showers	W 4 mph7 km/h
DayOvercast and warm, with a high of 83°F28°C and morning low of 71°F21°C. Light wind from the W around 4 mph7 km/h. 74% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 70°F21°C. Light wind from the W around 4 mph6 km/h. 59% chance of showers throughout the night.
	SaturdaySep 5	79°F26°C	66°F19°C	0.04 in1.1 mm· 24%	55%	Drizzle	N 5 mph8 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Light wind from the N around 5 mph8 km/h. 24% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Light wind from the N around 5 mph8 km/h. 13% chance of drizzle overnight.
	SundaySep 6	78°F26°C	60°F16°C	0 in0 mm· —	27%	Clear	NE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 60°F16°C. Light wind from the NE around 6 mph9 km/h. NightMostly clear, with a low around 60°F16°C. Light wind from the NE around 6 mph9 km/h.
	MondaySep 7	80°F27°C	60°F15°C	0 in0 mm· —	43%	Partly Cloudy	E 5 mph8 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Light wind from the E around 4 mph7 km/h. NightPartly cloudy, with a low around 60°F15°C. Light wind from the ENE around 6 mph9 km/h.
	TuesdaySep 8	84°F29°C	61°F16°C	0 in0 mm· —	61%	Partly Cloudy	SE 5 mph7 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 62°F17°C. Light wind from the SSE around 4 mph6 km/h. NightMostly cloudy, with a low around 61°F16°C. Light wind from the ESE around 5 mph8 km/h.
	WednesdaySep 9	87°F31°C Feels 90°F32°C	67°F19°C	0.04 in1 mm· 13%	58%	Drizzle	SSW 7 mph11 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 68°F20°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 13% chance of drizzle in the morning. Humid. NightMostly cloudy, with a low around 67°F19°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. 13% chance of drizzle in the evening.
	ThursdaySep 10	85°F29°C Feels 88°F31°C	73°F23°C	0.27 in6.9 mm· 43%	59%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 73°F23°C. Breezy from the WSW at 9 to 10 mph14 to 16 km/h. 43% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 39% chance of showers throughout the night.
	FridaySep 11	81°F27°C	67°F20°C	0.11 in2.9 mm· 21%	53%	Showers	W 6 mph10 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F20°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the W around 6 mph9 km/h. 21% chance of showers throughout the night.
	SaturdaySep 12	80°F27°C	63°F17°C	0.09 in2.4 mm· 18%	50%	Drizzle	SW 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 64°F18°C. Light wind from the WSW around 6 mph9 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SSW around 5 mph9 km/h. 15% chance of drizzle throughout the night.
	SundaySep 13	80°F27°C	64°F18°C	0.11 in2.9 mm· 23%	51%	Drizzle	SSW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 64°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 23% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the S around 6 mph10 km/h. 16% chance of drizzle throughout the night.
	MondaySep 14	80°F27°C	64°F18°C	0.12 in3.1 mm· 22%	52%	Showers	SSW 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 65°F18°C. Light wind from the SW around 6 mph9 km/h. 22% chance of showers throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the S around 6 mph9 km/h. 18% chance of showers throughout the night.
	TuesdaySep 15	80°F26°C	64°F18°C	0.11 in2.8 mm· 24%	49%	Showers	SW 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F26°C and morning low of 64°F18°C. Light wind from the SW around 6 mph10 km/h. 24% chance of showers throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the S around 6 mph9 km/h. 16% chance of showers throughout the night.
	WednesdaySep 16	78°F26°C	62°F17°C	0.11 in2.7 mm· 19%	45%	Showers	WSW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 62°F17°C. Light wind from the WSW around 6 mph9 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the E around 6 mph9 km/h. 16% chance of showers throughout the night.
	ThursdaySep 17	77°F25°C	60°F16°C	0.1 in2.6 mm· 17%	49%	Drizzle	NE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 60°F16°C. Light wind from the WSW around 6 mph9 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 60°F16°C. Light wind from the ENE around 6 mph9 km/h. 15% chance of drizzle throughout the night.

Nearby Cities

Mount Lebanon2 mi4 km Bethel Park2 mi4 km Baldwin6 mi9 km Pittsburgh9 mi14 km McKeesport12 mi19 km West Mifflin12 mi19 km

About This Forecast

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Coordinates: 40.3359°N, 80.0834°W·Elevation: 335m·Timezone: America/New_York·Population: 19,229