National Weather Service Forecast for: Penn Hills PA
Issued by: National Weather Service Pittsburgh, PA
Updated: 2:21 am EDT Aug 20, 2026
 
Overnight

Overnight: A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers

 Thursday

Thursday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm. High near 76. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Showers

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 61. Northeast wind around 6 mph.
Partly Cloudy

 Friday

Friday: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 80. East wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
Showers
 Friday
Night
Friday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 63. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
 Saturday

Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Partly Sunny
then Chance
T-storms
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Chance
T-storms then
Chance
Showers
 Sunday

Sunday: A chance of showers after 8am. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Chance
Showers

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 57.
Partly Cloudy
Lo 64 °F Hi 76 °F Lo 61 °F Hi 80 °F Lo 63 °F Hi 81 °F Lo 62 °F Hi 76 °F Lo 57 °F

Hazardous Weather Outlook
 

Overnight
 
 A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm. High near 76. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
 
 Partly cloudy, with a low around 61. Northeast wind around 6 mph.
Friday
 
 A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 80. East wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 63. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
Saturday
 
 A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Saturday Night
 
 A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Sunday
 
 A chance of showers after 8am. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Sunday Night
 
 Partly cloudy, with a low around 57.
Monday
 
 Sunny, with a high near 76.
Monday Night
 
 Mostly clear, with a low around 56.
Tuesday
 
 Mostly sunny, with a high near 78.
Tuesday Night
 
 Partly cloudy, with a low around 59.
Wednesday
 
 Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Penn Hills PA.