National Weather Service Forecast for: Pittsburgh PA
Issued by: National Weather Service Pittsburgh, PA
Updated: 10:17 pm EDT Sep 12, 2026
 
Tonight

Tonight: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 3am. Patchy fog. Otherwise, cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Patchy Fog
 Sunday

Sunday: Cloudy, then gradual clearing during the afternoon, with a high near 84. West wind 3 to 8 mph.
Clearing Late

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 5 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Chance
Showers
 Monday

Monday: Sunny, with a high near 74. North wind 7 to 9 mph.
Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 53. Light and variable wind.
Partly Cloudy

 Tuesday

Tuesday: Sunny, with a high near 82.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 62.
Mostly Clear

 Wednesday

Wednesday: Mostly sunny, with a high near 87.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 67.
Partly Cloudy
Lo 68 °F Hi 84 °F Lo 59 °F Hi 74 °F Lo 53 °F Hi 82 °F Lo 62 °F Hi 87 °F Lo 67 °F

Flood Watch
Hazardous Weather Outlook
 

Tonight
 
 Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 3am. Patchy fog. Otherwise, cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Cloudy, then gradual clearing during the afternoon, with a high near 84. West wind 3 to 8 mph.
Sunday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 5 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
 
 Sunny, with a high near 74. North wind 7 to 9 mph.
Monday Night
 
 Partly cloudy, with a low around 53. Light and variable wind.
Tuesday
 
 Sunny, with a high near 82.
Tuesday Night
 
 Mostly clear, with a low around 62.
Wednesday
 
 Mostly sunny, with a high near 87.
Wednesday Night
 
 Partly cloudy, with a low around 67.
Thursday
 
 A chance of showers after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Thursday Night
 
 A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Friday
 
 A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Saturday
 
 A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Pittsburgh PA.