Forecast Details for Norris, IL

Recent Locations: Norris, IL

Current Alerts for Norris, IL: Heat Advisory

Today: Scattered showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 90. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 30%.

Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.

Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 101. South southwest wind 3 to 6 mph.

Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. South southwest wind 3 to 6 mph.

Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Southwest wind 6 to 9 mph, with gusts as high as 16 mph.

Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. South southwest wind around 7 mph.

Friday: Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 90. West southwest wind 6 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90.

Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 86.

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

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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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 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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - 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