Ask USA TODAY Weather – USATODAY.com

By Doyle Rice, USA TODAY

Doyle Rice, the USA TODAY weather editor, is available to answer your weather and climate questions. Send your questions to askweather@usatoday.com. If your question is selected, you can look for the answer below. Due to the volume of questions received, not all can be answered, either individually or on this page.

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Q: Why is Texas so humid?— D.A. Marquez

A: Eastern Texas and the entire southeastern part of the USA receive plenty of moisture blown in from the nearby Gulf of Mexico, along with evaporated moisture from lakes, rivers, the ground and vegetation. With extensive heating from the spring, summer and fall sun high in the sky at these low latitudes, the evaporation potential is high, and the combination of warm temperatures and high-moisture content makes it really feel muggy.

However, while eastern Texas can be very humid and muggy, much of western Texas is quite dry, thanks to mountain air that dries out as it descends into Texas from Mexico and New Mexico. The dividing line is most pronounced in summer and is known as a dryline, which separates the different air masses.


Our state weather snapshot of Texas has more about the climate of the Lone Star State. — Doyle Rice

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Q: My 8-year old son asked me the other day, “At what temperature can you see your breath?” Can you help us? — John Robinette

A: That was a tough one, so I asked for help from an expert at the National Weather Service, meteorologist James Peronto. Here is his answer:

You can see your breath at a variety of temperatures (even as high as 70 degrees). It really depends on how much moisture is in the air (relative humidity). When you exhale, the air has water vapor in it. That exhaled water vapor is at a certain temperature (typically warmer than the surrounding air you are exhaling into)….

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