National Weather Service Forecast for: Chester PA
Issued by: National Weather Service Philadelphia, PA
Updated: 4:11 am EDT Jul 26, 2025
 
Today

Today: Partly sunny, with a high near 89. Northeast wind 5 to 10 mph becoming east in the afternoon.
Partly Sunny

Tonight

Tonight: A chance of showers and thunderstorms, mainly after 2am.  Mostly cloudy, with a low around 73. Southeast wind around 5 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms
Sunday

Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 86. Southwest wind around 5 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
T-storms
Sunday
Night
Sunday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Low around 74. Southwest wind around 5 mph becoming calm.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers then
Chance
Showers
Monday

Monday: Sunny, with a high near 93. Northwest wind around 5 mph.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 75.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 96.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 77.
Mostly Clear

Wednesday

Wednesday: Sunny, with a high near 95.
Sunny

Hi 89 °F Lo 73 °F Hi 86 °F Lo 74 °F Hi 93 °F Lo 75 °F Hi 96 °F Lo 77 °F Hi 95 °F

 

Today
 
Partly sunny, with a high near 89. Northeast wind 5 to 10 mph becoming east in the afternoon.
Tonight
 
A chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 86. Southwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 74. Southwest wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
 
Sunny, with a high near 93. Northwest wind around 5 mph.
Monday Night
 
Mostly clear, with a low around 75.
Tuesday
 
Sunny, with a high near 96.
Tuesday Night
 
Mostly clear, with a low around 77.
Wednesday
 
Sunny, with a high near 95.
Wednesday Night
 
A chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Thursday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Thursday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Friday
 
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Chester PA.