Current Conditions

Upper Saint Clair, Pennsylvania

68°F20°C

Drizzle

Wind

WSW 6 mph10 km/h

Humidity

91%

Cloud Cover

66%

As of Thursday, August 13, 2026 at 3:18 AM EDT

Today's Outlook

Day

Overcast and warm, with a high of 82°F28°C and morning low of 68°F20°C. Light wind from the W around 4 mph7 km/h. 21% chance of drizzle in the afternoon. Humid.

Night

Overcast, with a low around 67°F20°C. Light wind from the WSW around 4 mph7 km/h. 20% chance of drizzle overnight.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 82°F28°C	Low 67°F20°C	Precip 0.02 in0.6 mm21%	Cloud 86%	Wind W 4 mph7 km/h	Thursday: Overcast and warm, with a high of 82°F28°C and morning low of 68°F20°C. Light wind from the W around 4 mph7 km/h. 21% chance of drizzle in the afternoon. Humid. Thursday Night: Overcast, with a low around 67°F20°C. Light wind from the WSW around 4 mph7 km/h. 20% chance of drizzle overnight.
Light Rain	High 83°F28°C	Low 70°F21°C	Precip 0.13 in3.4 mm35%	Cloud 87%	Wind ENE 3 mph5 km/h	Friday: Overcast and warm, with a high of 83°F28°C and morning low of 70°F21°C. Light wind from the ENE around 3 mph5 km/h. 35% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 70°F21°C. Light wind from the ENE around 3 mph5 km/h. 14% chance of drizzle throughout the night.
Drizzle	High 86°F30°C	Low 68°F20°C	Precip 0.03 in0.7 mm15%	Cloud 73%	Wind E 4 mph6 km/h	Saturday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 69°F20°C. Light wind from the ESE around 3 mph5 km/h. Saturday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h. 15% chance of drizzle in the evening.
Rain	High 84°F29°CFeels 91°F33°C	Low 72°F22°C	Precip 0.72 in18.4 mm79%	Cloud 86%	Wind SW 6 mph10 km/h	Sunday: Overcast and warm, with a high of 84°F29°C and morning low of 73°F23°C — feels like 91°F33°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 73% chance of rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 72°F22°C. Light wind from the SW around 6 mph9 km/h. 79% chance of rain throughout the night.
Showers	High 81°F27°CFeels 84°F29°C	Low 70°F21°C	Precip 0.28 in7 mm64%	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 NW at 6 to 7 mph10 to 11 km/h. 64% 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. 61% chance of showers throughout the night.
Partly Cloudy	High 82°F28°C	Low 63°F17°C	Precip 0 in0.1 mm7%	Cloud 42%	Wind NNW 4 mph6 km/h	Tuesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the NNW around 3 mph5 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 85°F29°C	Low 62°F17°C	Precip 0.02 in0.6 mm13%	Cloud 54%	Wind SSW 5 mph8 km/h	Wednesday: Mostly cloudy and warm, with a high of 85°F29°C and morning low of 64°F18°C. Light wind from the SW around 5 mph8 km/h. Wednesday Night: Partly cloudy, with a low around 62°F17°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	82°F28°C	67°F20°C	0.02 in0.6 mm· 21%	86%	Drizzle	W 4 mph7 km/h
DayOvercast and warm, with a high of 82°F28°C and morning low of 68°F20°C. Light wind from the W around 4 mph7 km/h. 21% chance of drizzle in the afternoon. Humid. NightOvercast, with a low around 67°F20°C. Light wind from the WSW around 4 mph7 km/h. 20% chance of drizzle overnight.
	FridayAug 14	83°F28°C	70°F21°C	0.13 in3.4 mm· 35%	87%	Light Rain	ENE 3 mph5 km/h
DayOvercast and warm, with a high of 83°F28°C and morning low of 70°F21°C. Light wind from the ENE around 3 mph5 km/h. 35% chance of light rain throughout the day. Humid. NightOvercast, with a low around 70°F21°C. Light wind from the ENE around 3 mph5 km/h. 14% chance of drizzle throughout the night.
	SaturdayAug 15	86°F30°C	68°F20°C	0.03 in0.7 mm· 15%	73%	Drizzle	E 4 mph6 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 69°F20°C. Light wind from the ESE around 3 mph5 km/h. NightMostly cloudy, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h. 15% chance of drizzle in the evening.
	SundayAug 16	84°F29°C Feels 91°F33°C	72°F22°C	0.72 in18.4 mm· 79%	86%	Rain	SW 6 mph10 km/h
DayOvercast and warm, with a high of 84°F29°C and morning low of 73°F23°C — feels like 91°F33°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 73% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the SW around 6 mph9 km/h. 79% chance of rain throughout the night.
	MondayAug 17	81°F27°C Feels 84°F29°C	70°F21°C	0.28 in7 mm· 64%	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 NW at 6 to 7 mph10 to 11 km/h. 64% 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. 61% chance of showers throughout the night.
	TuesdayAug 18	82°F28°C	63°F17°C	0 in0.1 mm· 7%	42%	Partly Cloudy	NNW 4 mph6 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the NNW around 3 mph5 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NNW around 4 mph6 km/h.
	WednesdayAug 19	85°F29°C	62°F17°C	0.02 in0.6 mm· 13%	54%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 64°F18°C. Light wind from the SW around 5 mph8 km/h. NightPartly cloudy, with a low around 62°F17°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle in the evening.
	ThursdayAug 20	83°F28°C	69°F21°C	0.19 in4.7 mm· 34%	62%	Showers	WSW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the W at 7 mph10 km/h. 34% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 69°F21°C. Light wind from the WSW around 6 mph9 km/h. 28% chance of showers throughout the night.
	FridayAug 21	81°F27°C	65°F18°C	0.12 in3.1 mm· 22%	52%	Showers	NW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 65°F18°C. Light wind from the WNW around 5 mph8 km/h. 22% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Light wind from the NW around 5 mph8 km/h. 21% chance of showers throughout the night.
	SaturdayAug 22	80°F27°C	62°F17°C	0.09 in2.4 mm· 17%	44%	Drizzle	NW 5 mph7 km/h
DayPartly 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. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the NNW around 5 mph7 km/h. 14% chance of drizzle throughout the night.
	SundayAug 23	81°F27°C	61°F16°C	0.04 in1.1 mm· 9%	42%	Partly Cloudy	W 5 mph7 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 62°F17°C. Light wind from the W around 5 mph8 km/h. NightPartly cloudy, with a low around 61°F16°C. Light wind from the W around 5 mph7 km/h.
	MondayAug 24	83°F28°C	63°F17°C	0.07 in1.8 mm· 14%	42%	Drizzle	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 mph8 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SW around 5 mph8 km/h. 12% chance of drizzle throughout the night.
	TuesdayAug 25	83°F28°C	63°F17°C	0.07 in1.9 mm· 14%	42%	Drizzle	W 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 mph8 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SW around 5 mph8 km/h. 12% chance of drizzle throughout the night.
	WednesdayAug 26	82°F28°C	63°F17°C	0.09 in2.2 mm· 17%	44%	Drizzle	W 5 mph8 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the W around 5 mph8 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the W around 5 mph8 km/h. 17% chance of drizzle throughout the night.
	ThursdayAug 27	81°F27°C	63°F17°C	0.09 in2.2 mm· 21%	47%	Drizzle	NW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 64°F18°C. Light wind from the WNW around 5 mph8 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NNW around 5 mph8 km/h. 19% 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