Heavy Rain in the Appalachians and Central Gulf Coast; Heat Continues in the West; Monitoring the Tropics

Heavy to excessive rainfall over the southern Appalachians and portions of the central Gulf Coast may bring areas of flooding today. Hot temperatures are in place through today across much of the western U.S. and New England. Tropical Storm Erin is forecast to become a Major Hurricane this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Partly Cloudy

89°F

32°C

Humidity	53%
Wind Speed	SW 8 mph
Barometer	30.02 in
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	12 Aug 4:15 pm EDT

More Information:

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

Extended Forecast for

Maple Glen PA

Tonight
Low: 71 °F
Mostly Clear
then Patchy
Fog
Wednesday
High: 90 °F
Patchy Fog
then Showers
Likely
Wednesday Night
Low: 72 °F
Showers
Likely then
Chance
T-storms
Thursday
High: 87 °F
Chance
T-storms then
Showers
Likely
Thursday Night
Low: 69 °F
Showers
Likely then
Slight Chance
Showers
Friday
High: 88 °F
Sunny then
Slight Chance
Showers
Friday Night
Low: 67 °F
Partly Cloudy
Saturday
High: 88 °F
Sunny
Saturday Night
Low: 68 °F
Mostly Clear

Detailed Forecast

Tonight

Patchy fog after 5am. Otherwise, mostly clear, with a low around 71. Southwest wind around 5 mph becoming calm in the evening.

Wednesday

A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night

Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely, mainly before 8pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

A slight chance of showers after 2pm. Sunny, with a high near 88. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 67.

Saturday

Sunny, with a high near 88.

Saturday Night

Mostly clear, with a low around 68.

Sunday

Sunny, with a high near 92.

Sunday Night

Partly cloudy, with a low around 71.