National Weather Service Forecast for: Lancaster PA
Issued by: National Weather Service State College, PA
Updated: 11:31 pm EDT Sep 12, 2026
 
Overnight

Overnight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 69. Southeast wind 5 to 7 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Sunday

Sunday: Showers likely and possibly a thunderstorm before 9am, then a slight chance of showers between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely then
Mostly Sunny
 Sunday
Night
Sunday Night: Increasing clouds, with a low around 64. West wind 3 to 7 mph.
Increasing
Clouds
 Monday

Monday: Sunny, with a high near 76. North wind 10 to 13 mph, with gusts as high as 22 mph.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 50. North wind 5 to 7 mph becoming calm after midnight.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 78.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 55.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 82.
Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 61.
Partly Cloudy
Lo 69 °F Hi 85 °F Lo 64 °F Hi 76 °F Lo 50 °F Hi 78 °F Lo 55 °F Hi 82 °F Lo 61 °F

 

Overnight
 
 Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 69. Southeast wind 5 to 7 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
 Showers likely and possibly a thunderstorm before 9am, then a slight chance of showers between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 Increasing clouds, with a low around 64. West wind 3 to 7 mph.
Monday
 
 Sunny, with a high near 76. North wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
 
 Mostly clear, with a low around 50. North wind 5 to 7 mph becoming calm after midnight.
Tuesday
 
 Sunny, with a high near 78.
Tuesday Night
 
 Mostly clear, with a low around 55.
Wednesday
 
 Sunny, with a high near 82.
Wednesday Night
 
 Partly cloudy, with a low around 61.
Thursday
 
 Sunny, with a high near 86.
Thursday Night
 
 Partly cloudy, with a low around 64.
Friday
 
 A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Saturday
 
 A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Lancaster PA.