Forecast Details for Sioux Falls, SD

Recent Locations: Madison, WI Blue Jay, CA Sioux Falls, SD

Tonight: A slight chance of rain or freezing rain after 4am. Cloudy, with a low around 31. North wind 5 to 10 mph becoming east northeast after midnight. Chance of precipitation is 20%.

Friday: Freezing rain likely before 9am, then rain showers. Some thunder is also possible. High near 38. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

Friday Night: Rain and snow showers likely, becoming all snow after 10pm. Cloudy, with a low around 29. North northeast wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Saturday: A 40 percent chance of snow. Cloudy, with a high near 40. Breezy, with a west northwest wind 15 to 25 mph, with gusts as high as 35 mph. New snow accumulation of less than a half inch possible.

Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

Sunday: Sunny, with a high near 53. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

Sunday Night: Partly cloudy, with a low around 27.

Monday: Partly sunny, with a high near 44.

Monday Night: Partly cloudy, with a low around 20.

Tuesday: Partly sunny, with a high near 48. Breezy.

Tuesday Night: Mostly cloudy, with a low around 36.

Wednesday: Mostly sunny, with a high near 69. Breezy.

Wednesday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.

Thursday: A chance of rain and snow showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.

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North America Water Vapor (Moisture)

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Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds