Forecast Details for Carol Stream, IL

Recent Locations: Carol Stream, IL  
Today: Partly sunny, with a high near 56. North northeast wind 5 to 10 mph becoming east southeast in the afternoon.
Tonight: Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 44. East wind around 10 mph becoming south after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 58. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night: Mostly cloudy, with a low around 38. North northwest wind 5 to 10 mph becoming east northeast after midnight.
Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 50. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night: Showers and possibly a thunderstorm. Low around 43. Chance of precipitation is 80%.
Monday: Showers and possibly a thunderstorm. High near 52. Chance of precipitation is 90%.
Monday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 39.
Tuesday: A chance of showers before 1pm. Mostly cloudy, with a high near 50.
Tuesday Night: Mostly cloudy, with a low around 33.
Wednesday: Partly sunny, with a high near 49.
Wednesday Night: Partly cloudy, with a low around 32.
Thursday: Sunny, with a high near 56.

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 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