Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

71°F

22°C

Humidity	90%
Wind Speed	Calm
Barometer	29.94 in
Dewpoint	68°F (20°C)
Visibility	9.00 mi
Last update	22 Aug 6:35 pm EDT

More Information:

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

Extended Forecast for

Atglen PA

Tonight
Low: 65 °F
Chance
Showers then
Showers and
Patchy Fog
Sunday
High: 80 °F
Showers
Likely and
Patchy Fog
then Mostly
Sunny
Sunday Night
Low: 59 °F
Mostly Clear
Monday
High: 78 °F
Sunny
Monday Night
Low: 57 °F
Mostly Clear
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 60 °F
Mostly Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 65 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers after 5am. Patchy fog after 3am. Low around 65. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely before 8am, then a slight chance of showers and thunderstorms between 8am and 10am. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 80. South wind 5 to 10 mph becoming west in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Mostly clear, with a low around 59. West wind around 5 mph becoming calm in the evening.

Monday

Sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 57. West wind around 5 mph.

Tuesday

Sunny, with a high near 79.

Tuesday Night

Mostly clear, with a low around 60.

Wednesday

Sunny, with a high near 82.

Wednesday Night

Partly cloudy, with a low around 65.

Thursday

A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.

Thursday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.

Friday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Friday Night

A chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

Saturday

Mostly sunny, with a high near 82.