Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98° N Lon: 75.87° W Elev: 659 ft.

Partly Cloudy

69°F

21°C

Humidity 97%
Wind Speed Vrbl 3 mph
Barometer 30.01 in
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 27 Aug 7:35 am EDT
Detailed forecast for

Western Chester

Today
Mostly cloudy. A chance of showers and thunderstorms this morning, then showers with a chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 80s. South winds 5 to 10 mph. Chance of rain 80 percent.
Tonight
Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Some thunderstorms may produce heavy rainfall. Humid with lows in the mid 60s. South winds 5 to 10 mph in the evening, becoming light and variable. Chance of rain 70 percent.
Friday
Partly sunny. Patchy fog in the morning. Humid with highs in the lower 80s. Northwest winds around 5 mph.
Friday Night
Mostly cloudy in the evening, then becoming partly cloudy. Humid with lows in the mid 60s. North winds around 5 mph.
Saturday
Sunny with highs in the lower 80s. North winds around 5 mph.
Saturday Night
Mostly clear. Lows in the mid 60s.
Sunday
Mostly sunny. Hot with highs in the mid 80s.
Sunday Night
Partly cloudy. Lows in the upper 60s.
Monday
Mostly sunny. Hot with highs in the upper 80s.
Monday Night
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 60s.
Tuesday
Mostly sunny. Hot with highs in the upper 80s.
Tuesday Night
Partly cloudy. Lows in the upper 60s.
Wednesday
Partly sunny. A chance of showers in the afternoon. Hot with highs in the mid 80s. Chance of rain 40 percent.



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400 AM EDT Thu Aug 27 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database