Forecast Details for Marvin, SD

Recent Locations: Lavonia, GA Marvin, SD

Today: A slight chance of showers between 3pm and 4pm. Sunny, with a high near 81. West wind 11 to 17 mph becoming north in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

Tonight: Mostly clear, with a low around 47. North wind 8 to 17 mph.

Saturday: Sunny, with a high near 79. East wind 7 to 15 mph becoming south southeast in the afternoon.

Saturday Night: Mostly clear, with a low around 62. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 33 mph.

Sunday: Sunny, with a high near 86. Breezy, with a south southwest wind 25 to 29 mph, with gusts as high as 41 mph.

Sunday Night: Clear, with a low around 64. Windy, with a south wind 23 to 30 mph, with gusts as high as 41 mph.

Monday: Sunny, with a high near 85. Windy, with a south wind 28 to 32 mph, with gusts as high as 45 mph.

Monday Night: Mostly clear, with a low around 63. Breezy, with a south wind 22 to 26 mph, with gusts as high as 36 mph.

Tuesday: Sunny, with a high near 86. Breezy, with a south wind 22 to 24 mph, with gusts as high as 36 mph.

Tuesday Night: Partly cloudy, with a low around 63.

Wednesday: A slight chance of showers. Mostly sunny, with a high near 85. Breezy. Chance of precipitation is 20%.

Wednesday Night: Showers and thunderstorms likely. Partly cloudy, with a low around 58. Chance of precipitation is 60%.

Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 74. Breezy. 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

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North America Water Vapor (Moisture)

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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

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds