Forecast Details for Chattanooga, TN

Recent Locations: El Monte, CA Columbus, GA Chattanooga, TN

Tonight: Partly cloudy, with a low around 29. Calm wind.

Friday: Sunny, with a high near 59. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

Friday Night: Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday: Partly sunny, then gradually becoming sunny, with a high near 44. North wind around 10 mph, with gusts as high as 20 mph.

Saturday Night: Mostly clear, with a low around 23. North wind around 5 mph becoming calm in the evening.

Sunday: Mostly sunny, with a high near 54. Calm wind becoming south around 5 mph.

Sunday Night: Partly cloudy, with a low around 34. Calm wind.

Monday: Sunny, with a high near 64.

Monday Night: Partly cloudy, with a low around 43.

Tuesday: Partly sunny, with a high near 67.

Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 50.

Wednesday: A 30 percent chance of showers. Mostly cloudy, with a high near 66.

Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 49.

Thursday: A 30 percent chance of showers. Mostly cloudy, with a high near 64.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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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