Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Hazardous Weather Conditions

Flood Watch in effect from August 27, 12:00 PM EDT until August 28, 04:00 AM EDT

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Partly Cloudy

80°F

27°C

Humidity	52%
Wind Speed	SW 6 mph
Barometer	30.06 in
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	26 Aug 3:35 pm EDT

More Information:

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

Extended Forecast for

Valley Forge PA

Flood Watch August 27, 12:00pm until August 28, 04:00am

Click here for hazard details and duration

Flood Watch

Tonight
Low: 68 °F
Mostly Cloudy
then Slight
Chance
T-storms
Thursday
High: 87 °F
Showers
Likely
Thursday Night
Low: 66 °F
Showers
Friday
High: 85 °F
Chance
Showers then
Slight Chance
T-storms
Friday Night
Low: 64 °F
Mostly Cloudy
Saturday
High: 84 °F
Mostly Sunny
Saturday Night
Low: 64 °F
Partly Cloudy
Sunday
High: 86 °F
Mostly Sunny
Sunday Night
Low: 68 °F
Partly Cloudy

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 68. South wind around 5 mph. Chance of precipitation is 20%.

Thursday

Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Calm wind becoming northwest 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

Mostly cloudy, with a low around 64. Calm wind.

Saturday

Mostly sunny, with a high near 84.

Saturday Night

Partly cloudy, with a low around 64.

Sunday

Mostly sunny, with a high near 86.

Sunday Night

Partly cloudy, with a low around 68.

Monday

Mostly sunny, with a high near 90.