Forecast Details for Chicago, IL

Recent Locations: Miami, FL   Orlando International Airport, FL   Chicago, IL  
Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74. Southwest wind around 5 mph, with gusts as high as 10 mph.
Friday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80. North northeast wind 5 to 10 mph.
Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Northeast wind around 5 mph becoming south after midnight.
Saturday: Showers likely and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a high near 87. Heat index values as high as 97. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.
Saturday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Partly cloudy, with a low around 74. Southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Sunday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 90.
Sunday Night: Mostly clear, with a low around 76.
Monday: Sunny, with a high near 94.
Monday Night: Mostly clear, with a low around 76.
Tuesday: Mostly sunny, with a high near 86.
Tuesday Night: Partly cloudy, with a low around 71.
Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Wednesday Night: Partly cloudy, with a low around 68.
Thursday: Mostly sunny, with a high near 76.

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Current U.S. National Radar--Current

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Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Cirrocumulus Clouds Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

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