Forecast Details for Philadelphia, PA

Recent Locations: Philadelphia, PA  
Today: Rain, mainly before 5pm. Patchy fog before 3pm. High near 51. North wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight: A chance of rain, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 38. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday: Sunny, with a high near 55. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night: Clear, with a low around 38. Northwest wind around 10 mph.
Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 58. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 44. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday: Partly sunny, with a high near 63.
Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Monday: A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 50%.
Monday Night: Rain likely. Cloudy, with a low around 45. Chance of precipitation is 70%.
Tuesday: Rain. High near 57. Chance of precipitation is 80%.
Tuesday Night: Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Wednesday: A chance of rain. Mostly cloudy, with a high near 54. Breezy. Chance of precipitation is 50%.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds