Forecast Details for Great Lakes, IL

Recent Locations: Great Lakes, IL  
Current Alerts for Great Lakes, IL: Freeze Warning Frost Advisory
Overnight: Widespread frost. Otherwise, partly cloudy, with a low around 27. Calm wind.
Thursday: Widespread frost before 8am. Otherwise, sunny, with a high near 50. Light south southeast wind becoming east 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night: Mostly clear, with a low around 38. East wind 5 to 15 mph, with gusts as high as 20 mph.
Friday: Showers after 1pm. High near 54. Southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Friday Night: Showers and possibly a thunderstorm. Low around 52. Breezy, with a southeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. Breezy.
Saturday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 70%.
Sunday: Showers likely. Mostly cloudy, with a high near 76. Breezy.
Sunday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 57.
Monday: A chance of showers. Mostly cloudy, with a high near 70.
Monday Night: Mostly cloudy, with a low around 49.
Tuesday: Mostly sunny, with a high near 66.
Tuesday Night: A chance of showers. Partly cloudy, with a low around 54.
Wednesday: Mostly sunny, with a high near 70.

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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

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

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

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation