National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Areas Today; Tropical Storm Jerry Forms

Heavy to excessive rainfall is possible today and tonight ahead of and along a cold front crossing portions of Kentucky, middle Tennessee, the Ohio Valley and New Mexico. Tropical Storm Jerry, the tenth named storm of the 2025 season, has formed over the central tropical Atlantic. Jerry is expected to be near or north of the northern Leeward Islands on Thursday and Friday. Read More >

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

75°F

24°C

Humidity 60%
Wind Speed S 10 mph
Barometer 30.08 in (1018.7 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 7 Oct 12:56 pm EDT
Extended Forecast for

Mechanicsburg PA

  • This Afternoon

    This Afternoon: A chance of showers, mainly after 5pm. Mostly cloudy, with a high near 80. South wind around 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 59. Southwest wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 59 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 69. North wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Showers
    Likely then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. North wind 7 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 7 to 10 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 4am. Otherwise, clear, with a low around 35.

    Low: 35 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of showers, mainly after 5pm. Mostly cloudy, with a high near 80. South wind around 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers and possibly a thunderstorm. Low around 59. Southwest wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday
Showers likely, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 69. North wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Mostly clear, with a low around 43. North wind 7 to 10 mph.
Thursday
Sunny, with a high near 60. North wind 7 to 10 mph.
Thursday Night
Areas of frost after 4am. Otherwise, clear, with a low around 35.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 45.
Columbus Day
Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsburg PA
 40.18°N 77°W (Elev. 515 ft)
Last Update:
12:57 pm EDT Oct 7, 2025
Forecast Valid:
1pm EDT Oct 7, 2025-6pm EDT Oct 13, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation