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

78°F

26°C

Humidity 82%
Wind Speed NA
Barometer 29.57 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 28 Jul 6:15 pm EDT
Extended Forecast for

Conshohocken PA

Flood Watch July 28, 06:39pm until July 29, 02:00pm
Tornado Watch until July 28, 10:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch July 28, 06:39pm until July 29, 02:00pm
    Tornado Watch until July 28, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 66 °F

    Severe
    Thunderstorms
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 81. Northwest 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

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, mainly between 8pm and 10pm. Partly cloudy, with a low around 64. Northwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. North wind around 10 mph. Chance of precipitation is 30%.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. North wind around 5 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 2am. Some of the storms could be severe and produce heavy rainfall. Low around 66. South wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
A chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 81. Northwest 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
A slight chance of showers and thunderstorms, mainly between 8pm and 10pm. Partly cloudy, with a low around 64. Northwest wind around 5 mph. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. North wind around 10 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. North wind around 5 mph. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
A chance of showers after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 86. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Conshohocken PA
 40.09°N 75.31°W (Elev. 118 ft)
Last Update:
4:28 pm EDT Jul 28, 2026
Forecast Valid:
6pm EDT Jul 28, 2026-6pm EDT Aug 4, 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