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National Weather Service Forecast for: Mechanicsburg, PA
Issued by: National Weather Service State College, PA

Updated: Fri, 07-Aug-2026 6:11am EDT

Mechanicsburg

Today Partly Sunny then Showers And T-Storms Likely	Saturday Partly Sunny then Chance Showers And T-Storms	Sunday Sunny	Monday Mostly Sunny	Tuesday Partly Sunny then Chance Showers And T-Storms	Wednesday Chance Rain Showers	Thursday Chance Rain Showers then Chance Showers And T-Storms
Hi 89 °F	Hi 89 °F	Hi 88 °F	Hi 90 °F	Hi 89 °F	Hi 85 °F	Hi 85 °F

Tonight Showers And T-Storms then Mostly Cloudy	Saturday Night Chance Showers And T-Storms then Partly Cloudy	Sunday Night Mostly Clear	Monday Night Slight Chance Showers And T-Storms	Tuesday Night Chance Showers And T-Storms	Wednesday Night Chance Showers And T-Storms	Thursday Night Chance Showers And T-Storms
Lo 71 °F	Lo 72 °F	Lo 69 °F	Lo 73 °F	Lo 71 °F	Lo 68 °F	Lo 67 °F

Today	Showers and thunderstorms likely between 1pm and 5pm, then showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind 1 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight	Showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 10pm. Mostly cloudy, with a low around 71. South wind 0 to 3 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday	A chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 89. Southwest wind 1 to 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Night	A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind 2 to 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday	Sunny, with a high near 88. West wind 2 to 6 mph.
Sunday Night	Mostly clear, with a low around 69.
Monday	Mostly sunny, with a high near 90.
Monday Night	A slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 73.
Tuesday	A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.
Tuesday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Wednesday	A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Wednesday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Thursday	A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Thursday Night	A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67.

Forecast from NOAA-NWS for Mechanicsburg, PA.