| National Weather Service Forecast for:
Mechanicsburg, PA Issued by: National Weather Service State College, PA |
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| Updated: Sat, 12-Sep-2026 8:05am EDT | ||||||||||||||||||||||||||||||||||||||||
| Mechanicsburg | ||||||||||||||||||||||||||||||||||||||||
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| Today |
A slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 81. Southeast wind 5 to 9 mph. Chance of precipitation is 20%. |
| Tonight |
A chance of showers and thunderstorms before 10pm, then showers and thunderstorms. Cloudy, with a low around 67. Southeast wind 1 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible. |
| Sunday |
A chance of rain showers before 8am. Mostly sunny, with a high near 84. Northwest wind 1 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday Night |
A slight chance of rain showers between 2am and 5am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Northwest wind 3 to 8 mph. Chance of precipitation is 20%. |
| Monday |
A slight chance of showers and thunderstorms before 8am. Sunny, with a high near 76. North wind around 9 mph. Chance of precipitation is 20%. |
| Monday Night |
Mostly clear, with a low around 51. |
| Tuesday |
Sunny, with a high near 76. |
| Tuesday Night |
Partly cloudy, with a low around 56. |
| Wednesday |
Sunny, with a high near 83. |
| Wednesday Night |
Mostly clear, with a low around 62. |
| Thursday |
A chance of rain showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 40%. |
| Thursday Night |
A chance of rain showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 40%. |
| Friday |
A chance of rain showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 30%. |
| Friday Night |
A chance of rain showers. Mostly cloudy, with a low around 60. |
Forecast from NOAA-NWS for Mechanicsburg, PA.