Forecast Details for Northbrook, IL

Recent Locations: Irmo, SC Arcadia, SC Northbrook, IL

Current Alerts for Northbrook, IL: Flood Watch Wind Advisory

Today: Showers and possibly a thunderstorm, mainly before 5pm, then showers and thunderstorms likely after 5pm. Patchy fog before noon. High near 67. Breezy, with a south wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Tonight: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 46. Breezy, with a south southwest wind 20 to 25 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday: Partly sunny, with a high near 53. West wind 5 to 10 mph becoming east northeast in the afternoon.

Friday Night: Showers and possibly a thunderstorm. Low around 41. East northeast wind 10 to 15 mph becoming south southeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%.

Saturday: A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.

Saturday Night: Mostly cloudy, with a low around 35.

Sunday: Partly sunny, with a high near 51.

Sunday Night: Mostly clear, with a low around 36.

Monday: Partly sunny, with a high near 52.

Monday Night: Partly cloudy, with a low around 32.

Tuesday: Partly sunny, with a high near 42.

Tuesday Night: Mostly cloudy, with a low around 33.

Wednesday: Partly sunny, with a high near 58.

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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 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