National Weather Service Forecast for: Norristown PA
Issued by: National Weather Service Philadelphia, PA
Updated: 4:11 am EDT Jun 12, 2025
 
This
Afternoon
This Afternoon: Sunny, with a high near 90. West wind around 5 mph.
Sunny

 Tonight

Tonight: Mostly clear during the early evening, then becoming mostly cloudy, with a low around 66. Calm wind.
Mostly Cloudy

 Friday

Friday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 85. East wind around 5 mph. Chance of precipitation is 30%.
Mostly Cloudy
then Chance
T-storms
 Friday
Night
Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Saturday

Saturday: Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Cloudy, with a low around 62. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Sunday

Sunday: A chance of showers and thunderstorms. Cloudy, with a high near 75. Chance of precipitation is 50%.
Chance
T-storms

 Sunday
Night
Sunday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Cloudy, with a low around 62. Chance of precipitation is 40%.
Chance
T-storms

 Monday

Monday: A chance of showers. Cloudy, with a high near 72. Chance of precipitation is 40%.
Chance
Showers
Hi 90 °F Lo 66 °F Hi 85 °F Lo 64 °F Hi 75 °F Lo 62 °F Hi 75 °F Lo 62 °F Hi 72 °F

Air Quality Alert
 

This Afternoon
 
 Sunny, with a high near 90. West wind around 5 mph.
Tonight
 
 Mostly clear during the early evening, then becoming mostly cloudy, with a low around 66. Calm wind.
Friday
 
 A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 85. East wind around 5 mph. Chance of precipitation is 30%.
Friday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Cloudy, with a low around 62. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A chance of showers and thunderstorms. Cloudy, with a high near 75. Chance of precipitation is 50%.
Sunday Night
 
 A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Cloudy, with a low around 62. Chance of precipitation is 40%.
Monday
 
 A chance of showers. Cloudy, with a high near 72. Chance of precipitation is 40%.
Monday Night
 
 A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Tuesday
 
 A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
Tuesday Night
 
 A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
 
 A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Norristown PA.