UPPER ST CLAIR, PA 15241 Weather Forecast & Current Conditions
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  15241 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

ALLEGHENY CO. ARPT, PA
Current Weather
3:53 AM EDT JUN 27, 2025
Clear
Mist
70°F
Feels Like: 70°F
Dewpoint: 70°F
Rel. Hum.: 100%
Visibility: 5 miles
Wind: Calm
Pressure: 30.07 inches
Last 72 hours

Local Area Snow Depth

Pennsylvania Current Weather

Pennsylvania MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  15241 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

UPPER ST CLAIR, PA 15241
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy. A slight chance of showers and thunderstorms early, then thunderstorms with showers likely. Humid with highs in the upper 80s. Light and variable winds, becoming south 5 to 10 mph. Chance of rain 80 percent. Heat index values in the upper 90s.
TONIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Warm with lows around 70. South winds around 5 mph. Chance of rain 50 percent.
SATURDAY
Partly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with showers and thunderstorms likely in the afternoon. Humid with highs in the mid 80s. Southwest winds 5 to 10 mph. Chance of rain 70 percent.
SATURDAY NIGHT
Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then mainly clear after midnight. Humid with lows in the mid 60s. West winds around 5 mph. Chance of rain 70 percent.
SUNDAY
Mostly sunny. Very warm. Humid with highs in the upper 80s. West winds around 5 mph.
SUNDAY NIGHT
Partly cloudy. Lows in the upper 60s.
MONDAY
Partly sunny. A chance of showers in the morning, then showers with thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 80 percent.
MONDAY NIGHT
Showers. Thunderstorms likely, mainly in the evening. Warm with lows around 70. Chance of rain 80 percent.
TUESDAY
Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.
TUESDAY NIGHT
Mainly clear. A chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 50 percent.
WEDNESDAY
Mostly sunny. Highs in the mid 80s.
WEDNESDAY NIGHT
Mainly clear. Lows in the lower 60s.
THURSDAY
Partly cloudy. Highs in the mid 80s.

  15241 WEATHER SATELLITE LOOPS
Visible Weather Satellite
UPPER ST CLAIR, PA 15241
Infrared Weather Satellite
UPPER ST CLAIR, PA 15241
  15241 WEATHER RADAR LOOP
NEXRAD Weather Radar
UPPER ST CLAIR, PA 15241
 MOS COMPUTER WEATHER FORECAST

ALLEGHENY CO. ARPT, PA 3 hourly weather forecast
weather forecast created  7:00 PM CDT  6/26/2025
Friday
27 JUN 2025		 UPPER ST CLAIR, PA 15241 weather forecast Day 1, 0 hours 2 AM 74° 74° Mostly Cloudy 26%
RAIN
***		 0% Thunder
( 19% severe)		 S   2 90% 71°
Low 72° UPPER ST CLAIR, PA 15241 weather forecast Day 1, 3 hours 5 AM 73° 73° Mostly Cloudy SSE   2 90% 70°
High 86° UPPER ST CLAIR, PA 15241 weather forecast Day 1, 6 hours 8 AM 74° 74° Mostly Cloudy 54%
RAIN
1–2 in		 0% Thunder
( 38% severe)		 S   5 87% 70°

Mostly Cloudy

Rain Likely

 UPPER ST CLAIR, PA 15241 weather forecast Day 1, 9 hours 11 AM 80° 84° Mostly Cloudy S   6 77% 72°
UPPER ST CLAIR, PA 15241 weather forecast Day 1, 12 hours 2 PM 84° 90° Mostly Cloudy 71%
RAIN
***		 0% Thunder
( 66% severe)		 SSW   7 67% 72°
UPPER ST CLAIR, PA 15241 weather forecast Day 1, 15 hours 5 PM 83° 88° Mostly Cloudy SSE   6 67% 71°
UPPER ST CLAIR, PA 15241 weather forecast Day 1, 18 hours 8 PM 78° 80° Mostly Cloudy 26%
RAIN
.01–.1 in		 0% Thunder
( 28% severe)		 S   7 76% 70°
UPPER ST CLAIR, PA 15241 weather forecast Day 1, 21 hours 11 PM 75° 75° Mostly Cloudy SSE   6 82% 69°
Saturday
28 JUN 2025		 UPPER ST CLAIR, PA 15241 weather forecast Day 2, 0 hours 2 AM 73° 73° Partly Cloudy 20%
RAIN
<.01 in		 0% Thunder
( 15% severe)		 S   7 87% 69°
Low 71° UPPER ST CLAIR, PA 15241 weather forecast Day 2, 3 hours 5 AM 72° 72° Partly Cloudy SSW   7 90% 69°
High 85° UPPER ST CLAIR, PA 15241 weather forecast Day 2, 6 hours 8 AM 74° 74° Partly Cloudy 40%
RAIN
.5–1 in		 0% Thunder
( 28% severe)		 SSW   8 87% 70°

Mostly Cloudy

Rain Likely

 UPPER ST CLAIR, PA 15241 weather forecast Day 2, 9 hours 11 AM 80° 83° Mostly Cloudy WSW   9 74% 71°
UPPER ST CLAIR, PA 15241 weather forecast Day 2, 12 hours 2 PM 83° 87° Mostly Cloudy 65%
RAIN
1–2 in		 0% Thunder
( 43% severe)		 WSW   9 65% 70°
UPPER ST CLAIR, PA 15241 weather forecast Day 2, 15 hours 5 PM 82° 85° Mostly Cloudy W   8 63% 68°
UPPER ST CLAIR, PA 15241 weather forecast Day 2, 18 hours 8 PM 79° 81° Mostly Cloudy 17%
RAIN
.01–.1 in		 0% Thunder
( 16% severe)		 W   6 69% 68°
UPPER ST CLAIR, PA 15241 weather forecast Day 2, 21 hours 11 PM 74° 74° Partly Cloudy W   5 82% 68°

ALLEGHENY CO. ARPT, PA extended weather forecast
Sunday
29 JUN 2025		 Monday
30 JUN 2025		 Tuesday
1 JUL 2025		 Wednesday
2 JUL 2025		 Thursday
3 JUL 2025
Low 65° Low 69° Low 69° Low 65° Low 66°
High 86° High 84° High 84° High 86° High 84°
UPPER ST CLAIR, PA 15241 weather forecast Day 3 UPPER ST CLAIR, PA 15241 weather forecast Day 4 UPPER ST CLAIR, PA 15241 weather forecast Day 5 UPPER ST CLAIR, PA 15241 weather forecast Day 6 UPPER ST CLAIR, PA 15241 weather forecast Day 7
Partly Cloudy
12% Rain		 Mostly Cloudy
71% Rain		 Overcast
81% Rain		 Partly Cloudy
30% Rain		 Partly Cloudy
32% Rain
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