Forecast Details for Flat Rock, IL

Recent Locations: Oswego, NY KÄ«lauea, HI Flat Rock, IL

Today: Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 70. North northeast wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. East northeast wind 6 to 11 mph becoming south southeast after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 15 to 25 mph, with gusts as high as 38 mph.

Thursday Night: Showers likely and possibly a thunderstorm, then showers after 1am. Low around 62. South southwest wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 79. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers. High near 68. South wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 39.

Sunday: Mostly sunny, with a high near 53.

Sunday Night: Mostly clear, with a low around 33.

Monday: Sunny, with a high near 61.

Monday Night: Mostly clear, with a low around 40.

Tuesday: Mostly sunny, with a high near 58.

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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