Forecast Details for Philadelphia, PA

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Current Alerts for Philadelphia, PA: Winter Storm Warning

Tonight: A chance of rain after 3am. Increasing clouds, with a low around 34. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Snow, possibly mixed with rain. High near 37. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Sunday Night: Snow. The snow could be heavy at times. Areas of blowing snow after 3am. Low around 30. Blustery, with a north wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.

Monday: Snow likely, mainly before 1pm. Areas of blowing snow before 7am. Cloudy, with a high near 35. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

Monday Night: Mostly cloudy, with a low around 22. Northwest wind around 15 mph.

Tuesday: Mostly sunny, with a high near 31.

Tuesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

Wednesday: A chance of rain and snow before 1pm. Partly sunny, with a high near 41. Chance of precipitation is 30%.

Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

Thursday: A chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 50%.

Thursday Night: Rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

Friday: A chance of rain. Mostly sunny, with a high near 43. Chance of precipitation is 30%.

Friday Night: Mostly clear, with a low around 29.

Saturday: Sunny, with a high near 50.

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North America Water Vapor (Moisture)

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Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds