Forecast Details for Chicago, IL

Recent Locations: Chicago, IL

Today: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 90. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Tonight: Showers and thunderstorms likely, mainly between 7pm and 10pm. Mostly cloudy, with a low around 69. South southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday: Showers and possibly a thunderstorm. High near 81. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. West southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Juneteenth: Sunny, with a high near 82. West northwest wind around 10 mph, with gusts as high as 15 mph.

Thursday Night: Mostly clear, with a low around 67.

Friday: Mostly sunny, with a high near 86.

Friday Night: Partly cloudy, with a low around 72.

Saturday: Sunny, with a high near 93.

Saturday Night: Mostly clear, with a low around 76.

Sunday: Sunny, with a high near 94.

Sunday Night: Mostly clear, with a low around 76.

Monday: Sunny, with a high near 94.

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

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).

National Weather Forecast--Current

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

National Weather Forecast for Tomorrow

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

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 Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds