Forecast Details for Chicago, IL

Your Recent Locations:  Chicago, IL  
Tonight: Rain and possibly a thunderstorm. Widespread fog, mainly between 1am and 5am. Temperature rising to around 43 by 3am. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday: A chance of rain before noon, then a slight chance of showers after noon. Widespread fog before 9am. Otherwise, cloudy, with a temperature falling to around 39 by 5pm. West wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Tuesday Night: A chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and midnight. Cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Wednesday: Mostly sunny, with a high near 43. Southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night: Partly cloudy, with a low around 33. Southwest wind around 10 mph, with gusts as high as 15 mph.
Thursday: Mostly sunny, with a high near 45.
Thursday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 38.
Friday: A chance of rain. Cloudy, with a high near 42.
Friday Night: A slight chance of rain before midnight. Mostly cloudy, with a low around 36.
Saturday: Mostly cloudy, with a high near 45.
Saturday Night: A slight chance of rain. Mostly cloudy, with a low around 39.
Sunday: A chance of rain. Mostly cloudy, with a high near 44. Breezy.
Sunday Night: Rain likely. Cloudy, with a low around 37. Breezy.
Monday: Rain likely. Cloudy, with a high near 41.

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Weather Topic: What is Fog?

Home - Education - Cloud Types - Fog

fog Next Topic: Fractus Clouds

Fog is technically a type of stratus cloud, which lies along the ground and obscures visibility.

It is usually created when humidity in the air condenses into tiny water droplets. Because of this, some places are more prone to foggy weather, such as regions close to a body of water.

Fog is similar to mist; both are the appearance of water droplets suspended in the air, but fog is the term applied to the condition when visibility is less than 1 km.

Next Topic: Fractus Clouds

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

hole punch clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds