Current Conditions

Upper Saint Clair, Pennsylvania

80°F27°C

Drizzle

Wind

W 4 mph7 km/h

Humidity

63%

Cloud Cover

96%

As of Thursday, August 13, 2026 at 3:05 PM EDT

Today's Outlook

Day

Overcast and warm, with a high of 83°F28°C. Light wind from the WNW around 4 mph7 km/h. 17% chance of drizzle in the afternoon. Humid.

Night

Overcast, with a low around 73°F23°C. Light wind from the NNE around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 83°F28°C	Low 73°F23°C	Precip 0.01 in0.2 mm17%	Cloud 96%	Wind NW 4 mph6 km/h	Thursday: Overcast and warm, with a high of 83°F28°C. Light wind from the WNW around 4 mph7 km/h. 17% chance of drizzle in the afternoon. Humid. Thursday Night: Overcast, with a low around 73°F23°C. Light wind from the NNE around 3 mph5 km/h.
Light Rain	High 80°F26°C	Low 70°F21°C	Precip 0.2 in5.1 mm55%	Cloud 91%	Wind E 3 mph4 km/h	Friday: Overcast and warm, with a high of 80°F26°C and morning low of 71°F21°C. Light wind from the E around 3 mph4 km/h. 55% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 70°F21°C. Light wind from the E around 3 mph5 km/h. 24% chance of drizzle in the evening.
Drizzle	High 85°F30°C	Low 68°F20°C	Precip 0.04 in1.1 mm10%	Cloud 76%	Wind E 3 mph5 km/h	Saturday: Mostly cloudy and warm, with a high of 85°F30°C and morning low of 69°F21°C. Light wind from the E around 3 mph5 km/h. 10% chance of drizzle throughout the day. Humid. Saturday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h.
Rain	High 81°F27°CFeels 87°F30°C	Low 72°F22°C	Precip 0.73 in18.5 mm90%	Cloud 89%	Wind SW 6 mph10 km/h	Sunday: Overcast and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 90% chance of rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 72°F22°C. Light wind from the SSW around 5 mph9 km/h. 82% chance of rain throughout the night.
Showers	High 81°F27°C	Low 70°F21°C	Precip 0.27 in6.9 mm72%	Cloud 66%	Wind WNW 6 mph10 km/h	Monday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the WNW at 6 to 7 mph10 to 12 km/h. 72% chance of light rain throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the WNW around 6 mph9 km/h. 50% chance of showers throughout the night.
Clear	High 82°F28°C	Low 63°F17°C	Precip 0 in0.1 mm4%	Cloud 39%	Wind NW 4 mph6 km/h	Tuesday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the NW around 4 mph6 km/h. Tuesday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the NNW around 4 mph6 km/h.
Drizzle	High 84°F29°C	Low 61°F16°C	Precip 0.04 in1.1 mm20%	Cloud 51%	Wind SSW 5 mph8 km/h	Wednesday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 63°F17°C. Breezy from the SSW at 5 to 7 mph9 to 11 km/h. Wednesday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the S around 5 mph8 km/h. 20% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	83°F28°C	73°F23°C	0.01 in0.2 mm· 17%	96%	Drizzle	NW 4 mph6 km/h
DayOvercast and warm, with a high of 83°F28°C. Light wind from the WNW around 4 mph7 km/h. 17% chance of drizzle in the afternoon. Humid. NightOvercast, with a low around 73°F23°C. Light wind from the NNE around 3 mph5 km/h.
	FridayAug 14	80°F26°C	70°F21°C	0.2 in5.1 mm· 55%	91%	Light Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 80°F26°C and morning low of 71°F21°C. Light wind from the E around 3 mph4 km/h. 55% chance of light rain throughout the day. Humid. NightOvercast, with a low around 70°F21°C. Light wind from the E around 3 mph5 km/h. 24% chance of drizzle in the evening.
	SaturdayAug 15	85°F30°C	68°F20°C	0.04 in1.1 mm· 10%	76%	Drizzle	E 3 mph5 km/h
DayMostly cloudy and warm, with a high of 85°F30°C and morning low of 69°F21°C. Light wind from the E around 3 mph5 km/h. 10% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h.
	SundayAug 16	81°F27°C Feels 87°F30°C	72°F22°C	0.73 in18.5 mm· 90%	89%	Rain	SW 6 mph10 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 90% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the SSW around 5 mph9 km/h. 82% chance of rain throughout the night.
	MondayAug 17	81°F27°C	70°F21°C	0.27 in6.9 mm· 72%	66%	Showers	WNW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the WNW at 6 to 7 mph10 to 12 km/h. 72% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 70°F21°C. Light wind from the WNW around 6 mph9 km/h. 50% chance of showers throughout the night.
	TuesdayAug 18	82°F28°C	63°F17°C	0 in0.1 mm· 4%	39%	Clear	NW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the NW around 4 mph6 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NNW around 4 mph6 km/h.
	WednesdayAug 19	84°F29°C	61°F16°C	0.04 in1.1 mm· 20%	51%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 63°F17°C. Breezy from the SSW at 5 to 7 mph9 to 11 km/h. NightPartly cloudy, with a low around 61°F16°C. Light wind from the S around 5 mph8 km/h. 20% chance of drizzle in the evening.
	ThursdayAug 20	80°F27°C	68°F20°C	0.16 in4.1 mm· 30%	60%	Showers	W 6 mph10 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F20°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 29% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the W around 6 mph10 km/h. 30% chance of showers throughout the night.
	FridayAug 21	78°F26°C	62°F16°C	0.07 in1.8 mm· 14%	50%	Drizzle	NW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 63°F17°C. Light wind from the WNW around 5 mph8 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F16°C. Light wind from the NNW around 5 mph8 km/h. 12% chance of drizzle throughout the night.
	SaturdayAug 22	80°F27°C	61°F16°C	0.07 in1.8 mm· 17%	50%	Drizzle	WNW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 62°F17°C. Light wind from the W around 4 mph7 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 61°F16°C. Light wind from the NNW around 4 mph7 km/h. 15% chance of drizzle throughout the night.
	SundayAug 23	80°F27°C	62°F17°C	0.09 in2.3 mm· 21%	45%	Drizzle	NW 5 mph7 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Light wind from the WNW around 5 mph7 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the NNW around 4 mph7 km/h. 12% chance of drizzle throughout the night.
	MondayAug 24	82°F28°C	61°F16°C	0.07 in1.9 mm· 10%	40%	Drizzle	WSW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 62°F17°C. Light wind from the WSW around 5 mph7 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 61°F16°C. Light wind from the SW around 5 mph7 km/h. 10% chance of drizzle throughout the night.
	TuesdayAug 25	83°F29°C	62°F17°C	0.04 in1 mm· 11%	37%	Drizzle	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 83°F29°C and morning low of 63°F17°C. Light wind from the WSW around 5 mph8 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the SSW around 5 mph8 km/h.
	WednesdayAug 26	83°F28°C	63°F17°C	0.08 in2.1 mm· 18%	42%	Showers	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 64°F18°C. Light wind from the W around 5 mph9 km/h. 18% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SW around 5 mph8 km/h. 18% chance of drizzle throughout the night.
	ThursdayAug 27	82°F28°C	63°F17°C	0.06 in1.5 mm· 15%	45%	Drizzle	WNW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 64°F18°C. Light wind from the WNW around 5 mph8 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NW around 5 mph8 km/h. 12% 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

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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