National Weather Service Forecast for: Norristown PA
Issued by: National Weather Service Philadelphia, PA
Updated: 7:17 pm EDT Jun 18, 2026
 
Tonight

Tonight: Mostly cloudy, with a low around 66. West wind around 10 mph, with gusts as high as 20 mph.
Mostly Cloudy

 Juneteenth

Juneteenth: Cloudy through mid morning, then gradual clearing, with a high near 82. West wind 5 to 15 mph, with gusts as high as 30 mph.
Gradual
Clearing
 Friday
Night
Friday Night: Clear, with a low around 62. West wind 5 to 10 mph.
Clear

 Saturday

Saturday: Sunny, with a high near 82. West wind 10 to 15 mph.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 61. West wind around 5 mph becoming calm in the evening.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 84.
Sunny

 Sunday
Night
Sunday Night: A chance of showers after 2am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
 Monday

Monday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.
Showers

 Monday
Night
Monday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 63. Chance of precipitation is 80%.
Showers
Lo 66 °F Hi 82 °F Lo 62 °F Hi 82 °F Lo 61 °F Hi 84 °F Lo 63 °F Hi 82 °F Lo 63 °F

 

Tonight
 
 Mostly cloudy, with a low around 66. West wind around 10 mph, with gusts as high as 20 mph.
Juneteenth
 
 Cloudy through mid morning, then gradual clearing, with a high near 82. West wind 5 to 15 mph, with gusts as high as 30 mph.
Friday Night
 
 Clear, with a low around 62. West wind 5 to 10 mph.
Saturday
 
 Sunny, with a high near 82. West wind 10 to 15 mph.
Saturday Night
 
 Mostly clear, with a low around 61. West wind around 5 mph becoming calm in the evening.
Sunday
 
 Sunny, with a high near 84.
Sunday Night
 
 A chance of showers after 2am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Monday
 
 Showers likely, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.
Monday Night
 
 Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 63. Chance of precipitation is 80%.
Tuesday
 
 A chance of showers before 8am. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Tuesday Night
 
 Mostly clear, with a low around 61.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Partly cloudy, with a low around 63.
Thursday
 
 A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Norristown PA.