Showers and Storms in the East; Dangerously Hot and Dry in the West

A frontal boundary will bring scattered showers and storms to portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Intermountain West and expand into the Central U.S. by early next week. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from August 6, 10:00 AM EDT until August 7, 08:00 PM EDT

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog/Mist

75°F

24°C

Humidity	100%
Wind Speed	Vrbl 3 mph
Barometer	30.11 in
Dewpoint	75°F (24°C)
Visibility	6.00 mi
Last update	6 Aug 1:35 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Thorndale PA

Heat Advisory August 6, 10:00am until August 7, 08:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 72 °F
Isolated
T-storms and
Patchy Fog
Thursday
High: 89 °F
Patchy Fog
then Heavy
Rain
Thursday Night
Low: 72 °F
Heavy Rain
then Slight
Chance
T-storms and
Patchy Fog
Friday
High: 88 °F
Patchy Fog
then Chance
T-storms
Friday Night
Low: 71 °F
Showers
Likely
Saturday
High: 87 °F
Mostly Sunny
then Chance
T-storms
Saturday Night
Low: 70 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 87 °F
Sunny
Sunday Night
Low: 67 °F
Mostly Clear

Detailed Forecast

Overnight

Isolated showers and thunderstorms before 3am. Patchy fog. Otherwise, partly cloudy, with a low around 72. Calm wind becoming south around 5 mph. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 89. Southwest 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.

Thursday Night

A chance of showers and thunderstorms, mainly before midnight. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms after 2pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 88. Southwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 2am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Saturday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Sunday

Sunny, with a high near 87.

Sunday Night

Mostly clear, with a low around 67.

Monday

Mostly sunny, with a high near 87.

Monday Night

A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.