National Weather Service Forecast for: Harrisburg PA
Issued by: National Weather Service State College, PA
Updated: 8:55 pm EDT Jun 18, 2026
 
Tonight

Tonight: Mostly cloudy, with a low around 63. West wind 7 to 9 mph.
Mostly Cloudy

 Juneteenth

Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind 7 to 10 mph, with gusts as high as 20 mph.
Decreasing
Clouds
 Friday
Night
Friday Night: Mostly clear, with a low around 61. West wind 7 to 10 mph, with gusts as high as 20 mph.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 82. West wind 9 to 13 mph, with gusts as high as 23 mph.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 60. West wind 5 to 8 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. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Mostly Cloudy
then Chance
Showers
 Monday

Monday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 80%.
Showers

 Monday
Night
Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 62. Chance of precipitation is 80%.
Showers then
Chance
Showers
Lo 63 °F Hi 82 °F Lo 61 °F Hi 82 °F Lo 60 °F Hi 84 °F Lo 63 °F Hi 81 °F Lo 62 °F

 

Tonight
 
 Mostly cloudy, with a low around 63. West wind 7 to 9 mph.
Juneteenth
 
 Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind 7 to 10 mph, with gusts as high as 20 mph.
Friday Night
 
 Mostly clear, with a low around 61. West wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
 
 Sunny, with a high near 82. West wind 9 to 13 mph, with gusts as high as 23 mph.
Saturday Night
 
 Mostly clear, with a low around 60. West wind 5 to 8 mph becoming calm in the evening.
Sunday
 
 Sunny, with a high near 84.
Sunday Night
 
 A chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Monday
 
 Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 80%.
Monday Night
 
 Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 62. Chance of precipitation is 80%.
Tuesday
 
 Mostly sunny, with a high near 81.
Tuesday Night
 
 Mostly clear, with a low around 60.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Partly cloudy, with a low around 62.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Harrisburg PA.