National Weather Service Forecast for: Upper Darby PA
Issued by: National Weather Service Philadelphia, PA
Updated: 4:08 pm EDT Jul 16, 2026
 
This
Afternoon
This Afternoon: A chance of showers and thunderstorms. Patchy smoke. Mostly sunny, with a high near 94. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms
 Tonight

Tonight: A chance of showers and thunderstorms, mainly before 7pm. Widespread smoke, mainly after 10pm. Partly cloudy, with a low around 71. North wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Smoke
 Friday

Friday: Widespread smoke, mainly before 10am. Mostly sunny, with a high near 89. North wind around 5 mph.
Smoke

 Friday
Night
Friday Night: Patchy smoke before 3am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.
Patchy Smoke

 Saturday

Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 87. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 73. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Sunday

Sunday: A chance of showers before 8am. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Chance
Showers then
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 65.
Mostly Clear

 Monday

Monday: Sunny, with a high near 86.
Sunny
Hi 94 °F Lo 71 °F Hi 89 °F Lo 71 °F Hi 87 °F Lo 73 °F Hi 87 °F Lo 65 °F Hi 86 °F

Air Quality Alert
Heat Advisory
 

This Afternoon
 
 A chance of showers and thunderstorms. Patchy smoke. Mostly sunny, with a high near 94. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A chance of showers and thunderstorms, mainly before 7pm. Widespread smoke, mainly after 10pm. Partly cloudy, with a low around 71. North wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Widespread smoke, mainly before 10am. Mostly sunny, with a high near 89. North wind around 5 mph.
Friday Night
 
 Patchy smoke before 3am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.
Saturday
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 87. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
 
 Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 73. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
 A chance of showers before 8am. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Sunday Night
 
 Mostly clear, with a low around 65.
Monday
 
 Sunny, with a high near 86.
Monday Night
 
 Partly cloudy, with a low around 68.
Tuesday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Tuesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Wednesday
 
 A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Wednesday Night
 
 A chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
 
 Mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Upper Darby PA.