Forecast Details for Gilson, IL

Recent Locations: Gilson, IL  
Current Alerts for Gilson, IL: Flood Warning
Overnight: A 30 percent chance of showers. Mostly cloudy, with a low around 56. North northwest wind around 10 mph, with gusts as high as 17 mph.
Friday: Mostly cloudy, then gradually becoming sunny, with a high near 75. North wind 9 to 11 mph, with gusts as high as 18 mph.
Friday Night: Mostly clear, with a low around 50. East wind 7 to 9 mph, with gusts as high as 15 mph.
Saturday: A chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 80. East southeast wind 7 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night: Showers and thunderstorms likely before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 50. North northwest wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday: Sunny, with a high near 71. North wind 8 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 17 mph.
Sunday Night: Partly cloudy, with a low around 52. East wind 8 to 14 mph, with gusts as high as 20 mph.
Monday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 77.
Monday Night: A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 63. Chance of precipitation is 80%.
Tuesday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 79. Breezy. Chance of precipitation is 70%.
Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday: A chance of showers. Mostly sunny, with a high near 74.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

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

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