Forecast Details for Chicago, IL

Recent Locations: Chicago, IL  
Current Alerts for Chicago, IL: Winter Weather Advisory
Overnight: Mostly cloudy, with a steady temperature around 16. Wind chill values as low as -1. South southeast wind around 15 mph, with gusts as high as 30 mph.
Tuesday: Snow and freezing rain before 4pm, then freezing rain, possibly mixed with snow and sleet between 4pm and 5pm, then rain and freezing rain, possibly mixed with snow after 5pm. High near 35. Wind chill values as low as 1. South southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than a half inch possible.
Tuesday Night: Rain or freezing rain before 4am, then a chance of rain between 4am and 5am, then a chance of snow after 5am. Low around 28. South wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Wednesday: A 50 percent chance of snow before 1pm. Mostly cloudy, with a high near 29. Breezy, with a south southwest wind 5 to 10 mph becoming west 15 to 20 mph in the morning.
Wednesday Night: Mostly cloudy, with a low around 15. West wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday: A 20 percent chance of snow after 1pm. Partly sunny, with a high near 25.
Thursday Night: A 20 percent chance of snow before 7pm. Mostly cloudy, with a low around 0.
Friday: A slight chance of snow after 1pm. Partly sunny and cold, with a high near 8.
Friday Night: A chance of snow, mainly between 7pm and 1am. Mostly cloudy, with a low around 2.
Saturday: A chance of snow, mainly after 7am. Mostly cloudy, with a high near 17.
Saturday Night: A chance of snow. Mostly cloudy, with a low around 6.
Sunday: Mostly sunny, with a high near 16.
Sunday Night: Snow likely. Mostly cloudy, with a low around 13.
Monday: Snow likely. Mostly cloudy, with a high near 26.

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Current U.S. National Radar--Current

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Todays National Weather Map

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Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

cirrostratus clouds Next Topic: Altocumulus 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: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

altostratus clouds Next Topic: Cumulus 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: Cumulus Clouds