Forecast Details for Marvin, SD

Recent Locations: Viola, IA Bryant, AR Marvin, SD

Tonight: Mostly clear, with a low around 41. West southwest wind 8 to 11 mph becoming north northwest after midnight.

Tuesday: Sunny, with a high near 69. North wind 7 to 9 mph becoming east southeast in the afternoon.

Tuesday Night: Mostly clear, with a low around 50. South southeast wind 9 to 14 mph.

Wednesday: Mostly sunny, with a high near 84. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 36 mph.

Wednesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 60. Windy, with a south wind 23 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 40%.

Thursday: A chance of showers. Mostly sunny, with a high near 74. Breezy, with a southwest wind 25 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.

Thursday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 36. Breezy, with a west wind 25 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

Friday: Mostly sunny, with a high near 51. Breezy, with a west wind 24 to 28 mph, with gusts as high as 38 mph.

Friday Night: Partly cloudy, with a low around 31. Blustery, with a west wind 15 to 21 mph, with gusts as high as 30 mph.

Saturday: Mostly sunny, with a high near 48. Breezy.

Saturday Night: Partly cloudy, with a low around 29.

Sunday: A slight chance of showers. Mostly sunny, with a high near 50. Chance of precipitation is 20%.

Sunday Night: A slight chance of showers. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.

Monday: A slight chance of rain and snow showers. Partly sunny, with a high near 51. Chance of precipitation is 20%.

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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)

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.

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