Forecast Details for Philadelphia, PA

Recent Locations: Dubai International Airport, San Francisco, CA Philadelphia, PA

Today: A chance of showers before 9am, then a chance of showers after 2pm. The rain could be heavy at times. Mostly cloudy, with a high near 75. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: Showers and possibly a thunderstorm before 2am, then showers likely. Some of the storms could produce heavy rainfall. Low around 43. Southwest wind 5 to 15 mph becoming northwest after midnight. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Tuesday: Partly sunny, then gradually becoming sunny, with a high near 58. Northwest wind around 15 mph, with gusts as high as 25 mph.

Tuesday Night: Mostly clear, with a low around 38. Northeast wind 5 to 10 mph.

Wednesday: Partly sunny, with a high near 55. Northeast wind 10 to 15 mph becoming southeast in the afternoon.

Wednesday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

Thursday: A chance of showers before 8am, then a chance of showers after 2pm. Cloudy, with a high near 78. Breezy. Chance of precipitation is 30%.

Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

Friday: A chance of showers before 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.

Friday Night: A chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

Saturday: Showers likely. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.

Saturday Night: Showers likely. Cloudy, with a low around 46. Chance of precipitation is 70%.

Sunday: A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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

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.

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds