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

Flash Flooding and Severe Thunderstorms Tuesday, July 28th - Wednesday, July 29th

Scattered to numerous thunderstorms are likely across the region Tuesday, July 28th through Wednesday, July 29th which will bring a risk of flash flooding and severe thunderstorms across the entire region. View this briefing for the details regarding these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Overcast

75°F

24°C

Humidity 89%
Wind Speed S 7 mph
Barometer 29.71 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 28 Jul 9:35 am EDT
Extended Forecast for

West Conshohocken PA

Flood Watch until July 29, 02:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until July 29, 02:00pm

    NOW until 2:00pm Wed

    Flood Watch

  • Today

    High: 81 °F

    Showers
    Likely then
    Heavy Rain

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Some of the storms could produce heavy rainfall. Low around 65. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Heavy Rain
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 65. West wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 80. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 81. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Some of the storms could produce heavy rainfall. Low around 65. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 65. West wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 80. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Conshohocken PA
 40.07°N 75.34°W (Elev. 243 ft)
Last Update:
4:08 am EDT Jul 28, 2026
Forecast Valid:
9am EDT Jul 28, 2026-6pm EDT Aug 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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