Forecast Details for Sioux Falls, SD

Recent Locations: Sioux Falls, SD   Grinnell, IA   Brownsville, TX  
Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 70. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight: Showers and thunderstorms likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 59. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Monday: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. West southwest wind 5 to 10 mph becoming north in the afternoon.
Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 58. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tuesday: Showers and possibly a thunderstorm. High near 64. Breezy, with an east northeast wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 49. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 65.
Wednesday Night: Partly cloudy, with a low around 47.
Thursday: Sunny, with a high near 74.
Thursday Night: A 40 percent chance of showers. Partly cloudy, with a low around 54.
Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.
Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Saturday: A 30 percent chance of showers. Mostly sunny, with a high near 68.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

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

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Cirrostratus Clouds Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds