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

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Hazardous Weather Conditions

Heat Advisory until August 8, 08:00 PM EDT

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

72°F

22°C

Humidity	100%
Wind Speed	W 5 mph
Barometer	30.14 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	6 Aug 10:35 pm EDT

More Information:

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

Extended Forecast for

2 Miles SE Downingtown PA

Heat Advisory August 6, 10:55pm until August 8, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 6, 10:55pm until August 8, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Tonight
Low: 71 °F
Isolated
T-storms and
Patchy Fog
Friday
High: 88 °F
Patchy Fog
then Slight
Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms then
Slight Chance
Showers
Saturday
High: 87 °F
Partly Sunny
then Chance
T-storms
Saturday Night
Low: 69 °F
Chance
T-storms then
Partly Cloudy
Sunday
High: 87 °F
Sunny
Sunday Night
Low: 68 °F
Mostly Clear
Monday
High: 88 °F
Sunny

Detailed Forecast

Tonight

Isolated showers and thunderstorms before 1am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.

Friday

A slight chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

Friday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Sunday

Sunny, with a high near 87.

Sunday Night

Mostly clear, with a low around 68.

Monday

Sunny, with a high near 88.

Monday Night

Partly cloudy, with a low around 70.

Tuesday

A chance of showers after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

Tuesday Night

A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.