Forecast Details for Normal, IL

Recent Locations: Dallas, TX Shell Rock, IA Normal, IL

Current Alerts for Normal, IL: Wind Advisory

Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 44. East wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 73. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Showers and thunderstorms likely before 4am, then a slight chance of showers. Mostly cloudy, with a low around 55. Breezy, with a west southwest wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. South wind 6 to 14 mph, with gusts as high as 21 mph.

Friday Night: Showers and possibly a thunderstorm. Low around 54. South wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 61. West wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Saturday Night: Mostly cloudy, with a low around 34. West wind 15 to 18 mph, with gusts as high as 26 mph.

Sunday: Mostly sunny, with a high near 52.

Sunday Night: Mostly clear, with a low around 34.

Monday: Sunny, with a high near 58.

Monday Night: Partly cloudy, with a low around 33.

Tuesday: Mostly sunny, with a high near 52.

Tuesday Night: Partly cloudy, with a low around 33.

Wednesday: Partly sunny, with a high near 63.

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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

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North America Water Vapor (Moisture)

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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