Forecast Details for Island Lake, IL

Recent Locations: Princeton, NJ Ramer, AL Island Lake, IL

Today: A slight chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a temperature falling to around 44 by 5pm. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Rain showers before 5am, then rain likely, possibly mixed with snow showers. Some thunder is also possible. Low around 33. Northeast wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Friday: Snow likely before noon. Mostly cloudy, with a high near 39. Breezy, with a west wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday Night: Mostly cloudy, with a low around 25. West wind 10 to 15 mph, with gusts as high as 30 mph.

Saturday: Mostly cloudy, with a high near 37. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 24.

Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32.

Sunday Night: Mostly cloudy, with a low around 18.

Monday: Mostly sunny, with a high near 31.

Monday Night: Partly cloudy, with a low around 17.

Tuesday: Mostly sunny, with a high near 40.

Tuesday Night: Mostly cloudy, with a low around 31.

Wednesday: Mostly cloudy, with a high near 48.

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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)

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.

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

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds