On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Severe weather possible for parts of Midwest, New England

There is a Slight Risk of severe thunderstorms Tuesday afternoon and evening across parts of the Midwest, from eastern Nebraska across northern Missouri and much of Iowa and into extreme western Illinois. A Marginal Risk of severe thunderstorms extends from southwestern Kansas to northern Minnesota and Lake Superior, as well as across parts of New England.
Read More...

Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

89°F

32°C

Humidity 48%
Wind Speed N 3 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 28 Jul 4:54 pm EDT
Extended Forecast for

Harleysville PA

  • Tonight

    Tonight: Mostly clear, with a low around 68. Light and variable wind.

    Mostly Clear

    Low: 68 °F

  • Wednesday

    Wednesday: Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.

    Sunny

    High: 94 °F

  • Wednesday
    Night

    Wednesday Night: A slight chance of showers after 2am.  Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Mostly Clear
    then Slight
    Chance
    Showers

    Low: 72 °F

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 5pm.  Partly sunny, with a high near 92. Southwest wind 3 to 7 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely

    High: 92 °F

  • Thursday
    Night

    Thursday Night: Showers and thunderstorms likely before midnight, then a chance of showers.  Mostly cloudy, with a low around 68. Light and variable wind.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely then
    Chance
    Showers

    Low: 68 °F

  • Friday

    Friday: Sunny, with a high near 91.

    Sunny

    High: 91 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 68.

    Mostly Clear

    Low: 68 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    Mostly Sunny

    High: 91 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 67.

    Partly Cloudy

    Low: 67 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Light and variable wind.
Wednesday
Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
A slight chance of showers after 2am. Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 92. Southwest wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before midnight, then a chance of showers. Mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 91.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Harleysville PA
 40.29°N 75.38°W (Elev. 299 ft)
3:36 pm EDT Jul 28, 2015
5pm EDT Jul 28, 2015-6pm EDT Aug 4, 2015
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database