Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Overcast

69°F

21°C

Humidity 98%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 28 Jun 9:15 pm EDT
Extended Forecast for

Bryn Mawr PA

Extreme Heat Watch July 1, 12:00pm until July 4, 08:00pm
Flash Flood Warning until June 28, 10:45pm
Click here for hazard details and duration
Extreme Heat Watch
...
  •  
    Flash Flood Warning until June 28, 10:45pm

    NOW until 10:45pm Sun

    Flash Flood Warning

  • Tonight

    Low: 64 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 87. Calm wind becoming east around 5 mph.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 89. Southwest wind 5 to 10 mph.

    High: 89 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. South wind around 10 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Tonight
A slight chance of showers before 10pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 20%.
Monday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming east around 5 mph.
Monday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 65. South wind around 5 mph.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Southwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 71. South wind around 10 mph.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Clear, with a low around 79.
Friday
Sunny and hot, with a high near 100.
Friday Night
Partly cloudy, with a low around 76.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Bryn Mawr PA
 40.02°N 75.32°W (Elev. 397 ft)
6:29 pm EDT Jun 28, 2026
9pm EDT Jun 28, 2026-6pm EDT Jul 5, 2026
 
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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