Forecast Details for McKinney, TX

Recent Locations: Richmond, VA New Orleans, LA McKinney, TX

Tonight: Partly cloudy, with a low around 52. South southeast wind around 5 mph becoming east after midnight.

Friday: A 20 percent chance of showers after noon. Partly sunny, with a high near 78. South wind 5 to 10 mph.

Friday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 61. South southeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Showers, with thunderstorms also possible after 9am. High near 68. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Saturday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 53. South southwest wind 5 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

Sunday: Mostly sunny, with a high near 66. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday Night: Mostly clear, with a low around 45. North wind around 5 mph becoming calm in the evening.

Washington's Birthday: Sunny, with a high near 72. Light and variable wind becoming south 5 to 10 mph in the morning.

Monday Night: Partly cloudy, with a low around 52. South southeast wind 5 to 10 mph.

Tuesday: Mostly sunny, with a high near 78.

Tuesday Night: Mostly cloudy, with a low around 58.

Wednesday: Partly sunny, with a high near 80.

Wednesday Night: Partly cloudy, with a low around 53.

Thursday: Mostly sunny, with a high near 76.

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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