Forecast Details for Chicago O'Hare International Airport, IL

Recent Locations: Chicago O'Hare International Airport, IL  
Overnight: Cloudy, with a low around 38. Northwest wind around 10 mph, with gusts as high as 15 mph.
Saturday: Cloudy, with a high near 44. West wind 5 to 10 mph.
Saturday Night: Mostly cloudy, with a low around 37. Southwest wind around 5 mph.
Sunday: Mostly cloudy, with a high near 52. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night: Mostly cloudy, with a low around 45. South southeast wind around 5 mph becoming west after midnight. Winds could gust as high as 10 mph.
Monday: A 40 percent chance of rain after noon. Cloudy, with a high near 51.
Monday Night: Mostly cloudy, with a low around 27.
Tuesday: Sunny, with a high near 37.
Tuesday Night: Mostly cloudy, with a low around 27.
Wednesday: Partly sunny, with a high near 39.
Wednesday Night: A chance of rain and snow. Mostly cloudy, with a low around 30.
Thanksgiving Day: A chance of rain and snow. Mostly cloudy, with a high near 40.
Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 24.
Friday: Partly sunny, with a high near 31.

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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

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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog