National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
Read More...

Hazardous Weather Conditions

Current Conditions

En Español

Share |

Valley Forge PA

7 Day Forecast

For More Weather Information:

Philadelphia, PA Local Forecast Office

Today

Scattered Thunderstorms Chance for Measurable Precipitation 40%

Scattered
Thunderstorms

High: 84 °F

Tonight

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

Low: 66 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 81 °F

Friday
Night

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

Low: 65 °F

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 77 °F

Saturday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 60 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 76 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 57 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 78 °F

Detailed Forecast

  • Today Scattered showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 84. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
  • Tonight Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Friday A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Northeast wind 3 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Friday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. East wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Saturday A chance of showers and thunderstorms. Mostly cloudy, with a high near 77. East wind around 9 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
  • Saturday Night Mostly cloudy, with a low around 60.
  • Sunday Mostly sunny, with a high near 76.
  • Sunday Night Partly cloudy, with a low around 57.
  • Monday Mostly sunny, with a high near 78.
  • Monday Night Partly cloudy, with a low around 57.
  • Tuesday Mostly sunny, with a high near 81.
  • Tuesday Night Partly cloudy, with a low around 60.
  • Wednesday Mostly sunny, with a high near 83.