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Strong Thunderstorms Possible for Portions of the Great Lake States

Storms over the Great Lake States may contain heavy rain and strong winds. More thunderstorms are possible over the Desert Southwest and central Plains. High fire danger continues in the Great Basin. Very warm and humid conditions continue across the south, southeast and mid-Atlantic states.
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Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

74°F

23°C

Humidity 79%
Wind Speed SW 3 mph
Barometer 29.93 in (1013.2 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 4 Sep 12:56 am EDT
Extended Forecast for

Mechanicsburg PA

  • Overnight

    Overnight: A slight chance of showers before 2am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 69. Calm wind.  Chance of precipitation is 20%.

    Slight Chance
    Showers and
    Patchy Fog

    Low: 69 °F

  • Friday

    Friday: A chance of showers and thunderstorms after 10am.  Patchy fog before 10am.  Otherwise, mostly cloudy, with a high near 85. Light and variable wind becoming northeast around 6 mph in the morning.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    T-storms and
    Patchy Fog

    High: 85 °F

  • Friday
    Night

    Friday Night: A slight chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 64. East wind around 7 mph.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 64 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 82. East wind around 7 mph.

    Mostly Sunny

    High: 82 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 60. Light southeast wind.

    Mostly Clear

    Low: 60 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    Mostly Sunny

    High: 84 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 62.

    Partly Cloudy

    Low: 62 °F

  • Labor
    Day

    Labor Day: Mostly sunny, with a high near 86.

    Mostly Sunny

    High: 86 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 65.

    Partly Cloudy

    Low: 65 °F

Detailed Forecast

Overnight
A slight chance of showers before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 85. Light and variable wind becoming northeast around 6 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 64. East wind around 7 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 82. East wind around 7 mph.
Saturday Night
Mostly clear, with a low around 60. Light southeast wind.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 62.
Labor Day
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly cloudy, with a low around 65.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
  Click Map For Forecast
Point Forecast:
Mechanicsburg PA
 40.2°N 77°W (Elev. 476 ft)
12:31 am EDT Sep 4, 2015
1am EDT Sep 4, 2015-6pm EDT Sep 10, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database