Forecast Details for Philadelphia, PA

Recent Locations: Philadelphia, PA  
Tonight: Scattered sprinkles and flurries after 5am. Increasing clouds, with a low around 32. South wind 5 to 10 mph.
Monday: Mostly cloudy, then gradually becoming sunny, with a high near 58. Southwest wind 5 to 10 mph.
Monday Night: Partly cloudy, with a low around 40. East wind around 5 mph.
Tuesday: A chance of rain after 1pm. Partly sunny, with a high near 64. South wind 5 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night: Rain likely. Cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday: Rain, mainly before 1pm. High near 65. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night: Rain, mainly before 1am. Low around 36. Breezy. Chance of precipitation is 80%.
Thursday: Mostly sunny, with a high near 47. Breezy.
Thursday Night: Mostly clear, with a low around 29.
Friday: Sunny, with a high near 47.
Friday Night: Partly cloudy, with a low around 35.
Saturday: Partly sunny, with a high near 54.
Saturday Night: Mostly cloudy, with a low around 42.
Sunday: Partly sunny, with a high near 61.

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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 is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Stratocumulus Clouds Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds