Forecast Details for Sioux City, IA

Recent Locations: Rio Rancho, NM Mershon, GA Sioux City, IA

Current Alerts for Sioux City, IA: Red Flag Warning Wind Advisory

Overnight: Mostly clear, with a low around 39. Breezy, with a west wind 20 to 25 mph, with gusts as high as 35 mph.

Wednesday: Sunny, with a high near 61. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 40 mph.

Wednesday Night: Partly cloudy, with a low around 27. North northwest wind 5 to 15 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

Thursday: A 40 percent chance of snow. Mostly cloudy, with a high near 38. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph. New snow accumulation of around 2 inches.

Thursday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 16. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of around 2 inches.

Friday: Mostly sunny, with a high near 32. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Friday Night: Partly cloudy, with a low around 13.

Saturday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 34.

Saturday Night: Partly cloudy, with a low around 11.

Sunday: Sunny, with a high near 28.

Sunday Night: Mostly clear, with a low around 6.

Monday: Mostly sunny, with a high near 32.

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

Tuesday: Mostly sunny, with a high near 51.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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 Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - 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