Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fair

88°F

31°C

Humidity 46%
Wind Speed SW 7 mph
Barometer 30.00 in (1015.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 20 May 12:54 pm EDT
Extended Forecast for

Collegeville PA

Heat Advisory May 20, 01:02pm until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 20, 01:02pm until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 5am, then a chance of showers.  Low around 55. North wind around 5 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly before 1pm.  High near 66. Northeast wind 5 to 10 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers.  Mostly cloudy, with a high near 65. East wind 5 to 10 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers.  Low around 47. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers

  • Saturday

    Saturday: Showers.  High near 58. Chance of precipitation is 90%.

    High: 58 °F

    Showers

  • Saturday Night

    Saturday Night: Showers.  Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 92. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 5am, then a chance of showers. Low around 55. North wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers, mainly before 1pm. High near 66. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm.
Friday
A chance of showers. Mostly cloudy, with a high near 65. East wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers. Low around 47. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Showers. High near 58. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 49. Chance of precipitation is 80%.
Sunday
A chance of showers before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.
Sunday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Collegeville PA
 40.19°N 75.46°W (Elev. 200 ft)
10:00 am EDT May 20, 2026
1pm EDT May 20, 2026-6pm EDT May 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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