Forecast Details for Saint Marys City, MD

Recent Locations: Waite Park, MN Hensonville, NY Saint Marys City, MD

Tonight: Snow, mainly before 4am. The snow could be heavy at times. Low around 30. Blustery, with a northwest wind 18 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 3 to 5 inches possible.

Monday: Snow likely, possibly mixing with rain after 2pm, then gradually ending. Cloudy, with a high near 42. Breezy, with a northwest wind 14 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Northwest wind 13 to 15 mph, with gusts as high as 28 mph.

Tuesday: Sunny, with a high near 40. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.

Tuesday Night: A chance of snow after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 31. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Wednesday: A chance of rain, mainly before 7am. Partly sunny, with a high near 53. Chance of precipitation is 30%.

Wednesday Night: Partly cloudy, with a low around 39.

Thursday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 70%.

Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

Friday: A chance of rain before 1pm. Mostly sunny, with a high near 49. Chance of precipitation is 30%.

Friday Night: Mostly clear, with a low around 33.

Saturday: Sunny, with a high near 51.

Saturday Night: Partly cloudy, with a low around 37.

Sunday: Partly sunny, with a high near 53.

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Current U.S. National Radar--Current

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North America Water Vapor (Moisture)

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Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet