Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fair

77°F

25°C

Humidity	59%
Wind Speed	NE 6 mph
Barometer	30.12 in
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	4 Aug 10:15 am EDT

More Information:

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

Extended Forecast for

Devon-Berwyn PA

Today
High: 84 °F
Mostly Sunny
Tonight
Low: 66 °F
Mostly Cloudy
Wednesday
High: 83 °F
Slight Chance
T-storms then
Showers
Wednesday Night
Low: 71 °F
Showers
Likely then
Chance
Showers
Thursday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Friday
High: 88 °F
Sunny then
Chance
T-storms
Friday Night
Low: 71 °F
Chance
T-storms
Saturday
High: 86 °F
Partly Sunny
then Chance
T-storms

Detailed Forecast

Today

Mostly sunny, with a high near 84. Northeast wind around 5 mph.

Tonight

Mostly cloudy, with a low around 66. Calm wind.

Wednesday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 83. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Chance of precipitation is 40%. 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. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.

Saturday Night

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

Sunday

Mostly sunny, with a high near 87.

Sunday Night

Partly cloudy, with a low around 71.

Monday

Sunny, with a high near 89.