El Paso is located at the western tip of Texas, so it lies within the range of the Chihuahuan desert, which covers much of Chihuahua and Coahuila in Mexico, and some parts of New Mexico as well. As a result, rainfall is scarce here, and the city enjoys over 200 days of full sunshine a year. The climate is also very dry, with less than 9in (23cm) of rain a year, most of which occurs during the summer. Between July and September, winds from the Gulf of Mexico blow into El Paso, carrying moisture and causing flash thunderstorms.

Temperature averages vary widely during the year, as the city is landlocked and the weather is not moderated by nearby bodies of water. Highs in the summer often go above 100°F (38°C), though nights are usually much cooler (about 70°F or 21°C). During the winter, daytime temperatures usually remain in the 50s (10-15°C) even in January, but nights can dip below freezing.

The summer sun and low humidity can cause dehydration, sunstroke and similar health problems, so bring sunscreen and plenty of water wherever you go in El Paso. Also avoid visiting the city in June or July, as these months have the hottest temperatures of the year.