| National Weather Service Forecast for:
Mechanicsburg, PA Issued by: National Weather Service State College, PA |
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| Updated: Thu, 03-Sep-2026 10:30pm EDT | ||||||||||||||||||||||||||||||||||||||||
| Mechanicsburg | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
A chance of showers and thunderstorms before 5am. Some of the storms could be severe. Mostly cloudy, with a low around 71. West wind 1 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Friday |
A chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. West wind 2 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 9pm, then a chance of showers and thunderstorms between 9pm and 2am. Mostly cloudy, with a low around 66. Northwest wind 2 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday |
Mostly sunny, with a high near 81. North wind 2 to 6 mph. |
| Saturday Night |
Mostly clear, with a low around 58. North wind around 5 mph. |
| Sunday |
Sunny, with a high near 78. |
| Sunday Night |
Mostly clear, with a low around 57. |
| Labor Day |
Sunny, with a high near 79. |
| Monday Night |
Partly cloudy, with a low around 58. |
| Tuesday |
Mostly sunny, with a high near 81. |
| Tuesday Night |
Partly cloudy, with a low around 61. |
| Wednesday |
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 83. |
| Wednesday Night |
A chance of rain showers. Mostly cloudy, with a low around 68. Chance of precipitation is 30%. |
| Thursday |
A chance of rain showers. Mostly sunny, with a high near 86. |
Forecast from NOAA-NWS for Mechanicsburg, PA.