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

Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

90°F

32°C

Humidity 29%
Wind Speed SW 7 mph
Barometer 30.10 in (1018.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 18 May 6:54 pm EDT
Extended Forecast for

Phoenixville PA

Heat Advisory May 18, 07:22pm until May 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 18, 07:22pm until May 19, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Tonight

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the afternoon.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 55. North wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 70. South wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 55. North wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Friday Night
Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Saturday
Showers. High near 65. Chance of precipitation is 80%.
Saturday Night
Showers likely. Cloudy, with a low around 52. Chance of precipitation is 70%.
Sunday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Phoenixville PA
 40.13°N 75.53°W (Elev. 157 ft)
Last Update:
4:08 pm EDT May 18, 2026
Forecast Valid:
7pm EDT May 18, 2026-6pm EDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation