Weather forecast for: Mechanicsburg PA
Last Update: 2:21 pm EDT Aug 4, 2026
This Afternoon: Mostly sunny, with a high near 84. Light east wind.
Tonight: Increasing clouds, with a low around 68. Light east wind.
Wednesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 82. Calm wind becoming east 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.
Wednesday Night: Showers likely, mainly before 8pm. The rain could be heavy at times. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday: Showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday: Showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Saturday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday: Mostly sunny, with a high near 87.
Sunday Night: Partly cloudy, with a low around 69.
Monday: Mostly sunny, with a high near 89.
WeatherWorld.com
Borough of Mechanicsburg, PA
