Forecast Details for Potomac, MD

Recent Locations: Palmdale, CA Le Grand, CA Potomac, MD

Overnight: Isolated showers. Cloudy, with a low around 69. Northeast wind around 6 mph. Chance of precipitation is 20%.

Thursday: Isolated showers before 11am, then a slight chance of showers after 2pm. Cloudy, with a high near 75. Northeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Thursday Night: Mostly cloudy, with a low around 63. North wind 5 to 8 mph.

Friday: Sunny, with a high near 82. North wind around 6 mph.

Friday Night: Mostly clear, with a low around 63. Light and variable wind.

Saturday: Mostly sunny, with a high near 83.

Saturday Night: Partly cloudy, with a low around 67.

Sunday: Showers likely, mainly after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

Sunday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

Monday: Mostly sunny, with a high near 82.

Monday Night: Mostly clear, with a low around 59.

Tuesday: Sunny, with a high near 77.

Tuesday Night: Partly cloudy, with a low around 57.

Wednesday: Mostly sunny, with a high near 77.

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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

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North America Water Vapor (Moisture)

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Weather Topic: What is Hail?

Home - Education - Precipitation - Hail

Hail Next Topic: Hole Punch Clouds

Hail is a form of precipitation which is recognized by large solid balls or clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind. As the hailstones remain in the updraft, ice is deposited onto them until their weight becomes heavy enough for them to fall to the earth's surface.

Hail storms can cause significant damage to crops, aircrafts, and man-made structures, despite the fact that the duration is usually less than ten minutes.

Next Topic: Hole Punch Clouds

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds