Forecast Details for Poolesville, MD

Recent Locations: Poolesville, MD  
Current Alerts for Poolesville, MD: Unnamed Alert
Overnight: Mostly cloudy, with a low around 63. Light northwest wind.
Thursday: Showers likely, mainly between 9am and 11am. Cloudy, with a high near 68. Light and variable wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 55. East wind 6 to 10 mph becoming southeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday: Showers likely, with thunderstorms also possible after 5pm. Cloudy, with a high near 60. Northeast wind 8 to 13 mph becoming northwest in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 48. Northwest wind 7 to 10 mph. Chance of precipitation is 60%.
Saturday: A slight chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 64. Chance of precipitation is 50%.
Saturday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 65. Chance of precipitation is 40%.
Sunday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 46. Chance of precipitation is 30%.
Monday: Mostly sunny, with a high near 74.
Monday Night: Partly cloudy, with a low around 56.
Tuesday: A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Tuesday Night: Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday: Showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.

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Current U.S. National Radar--Current

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Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

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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.

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Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

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