National Weather Service Forecast for: Penn Hills PA
Issued by: National Weather Service Pittsburgh, PA
Updated: 12:16 am EDT Jun 30, 2026
 
Overnight

Overnight: Mostly clear, with a low around 70. Southeast wind 3 to 5 mph.
Mostly Clear

Tuesday

Tuesday: Mostly sunny and hot, with a high near 93. Heat index values as high as 100. Southwest wind 5 to 10 mph.
Hot

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 74. Southwest wind 5 to 7 mph.
Partly Cloudy

Wednesday

Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 105. West wind 7 to 9 mph.
Hot

Wednesday
Night
Wednesday Night: Clear, with a low around 74. Southwest wind 3 to 6 mph.
Clear

Thursday

Thursday: Sunny and hot, with a high near 99.
Hot

Thursday
Night
Thursday Night: Mostly clear, with a low around 76.
Mostly Clear

Friday

Friday: A chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 96. Chance of precipitation is 30%.
Sunny then
Chance
T-storms
Friday
Night
Friday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Chance
T-storms
Lo 70 °F Hi 93 °F Lo 74 °F Hi 97 °F Lo 74 °F Hi 99 °F Lo 76 °F Hi 96 °F Lo 74 °F

Heat Advisory
Hazardous Weather Outlook
 

Overnight
 
Mostly clear, with a low around 70. Southeast wind 3 to 5 mph.
Tuesday
 
Mostly sunny and hot, with a high near 93. Heat index values as high as 100. Southwest wind 5 to 10 mph.
Tuesday Night
 
Partly cloudy, with a low around 74. Southwest wind 5 to 7 mph.
Wednesday
 
Sunny and hot, with a high near 97. Heat index values as high as 105. West wind 7 to 9 mph.
Wednesday Night
 
Clear, with a low around 74. Southwest wind 3 to 6 mph.
Thursday
 
Sunny and hot, with a high near 99.
Thursday Night
 
Mostly clear, with a low around 76.
Friday
 
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Chance of precipitation is 30%.
Friday Night
 
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Independence Day
 
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 92. Chance of precipitation is 50%.
Saturday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Sunday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Sunday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Monday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Penn Hills PA.