Forecast Details for Chicago O'Hare International Airport, IL

Today: Sunny, with a high near 11. Wind chill values as low as -9. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight: Increasing clouds, with a temperature rising to around 17 by 5am. Wind chill values as low as -7. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday: A 20 percent chance of snow showers after noon. Mostly cloudy, with a high near 30. Southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.
Thursday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 11. Wind chill values as low as -1. North northwest wind 10 to 15 mph.
Friday: A 20 percent chance of snow. Partly sunny, with a high near 21. North northwest wind around 10 mph, with gusts as high as 15 mph.
Friday Night: Mostly clear, with a low around 1.
Saturday: Mostly sunny, with a high near 21.
Saturday Night: Mostly cloudy, with a low around 15.
Sunday: Mostly sunny, with a high near 30.
Sunday Night: Partly cloudy, with a low around 15.
Monday: Mostly sunny, with a high near 35.
Monday Night: Mostly cloudy, with a low around 27.
Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 42.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Want to Receive our Free Daily Forecast Emails in your inbox by 5 a.m.?
There are no ads! Learn More
We respect your privacy and will not share or sell your email with anyone.

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

The Current National Weather Forecast and National Weather Map are shown below.

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