Forecast Details for Highland Park, IL

Recent Locations: Highland Park, IL  
Tonight: Increasing clouds, with a low around 53. East southeast wind around 10 mph, with gusts as high as 15 mph.
Tuesday: Showers and thunderstorms likely before 9am, then showers and possibly a thunderstorm between 9am and noon, then a chance of showers and thunderstorms after noon. High near 67. Southeast wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 54. West southwest wind 5 to 10 mph.
Wednesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 67. West southwest wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.
Wednesday Night: Showers likely and possibly a thunderstorm before 7pm, then showers and thunderstorms likely between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 49. Northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.
Thursday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 44. Breezy.
Friday: Sunny, with a high near 58.
Friday Night: A chance of showers after 1am. Partly cloudy, with a low around 48.
Saturday: A chance of showers. Mostly sunny, with a high near 61.
Saturday Night: Partly cloudy, with a low around 48.
Sunday: Mostly sunny, with a high near 66.
Sunday Night: Partly cloudy, with a low around 51.
Monday: Mostly sunny, with a high near 67.

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Current U.S. National Radar--Current

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North America Water Vapor (Moisture)

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Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Stratocumulus Clouds Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds