San Antonio Statistics
San Antonio, occupying 368.6 square miles, is the seat of Bexar County (pronounced "bear"). The Metropolitan Statistical Area (MSA) consists of Bexar, Comal, Guadalupe and Wilson Counties. San Antonio is in South Central Texas, approximately 140 miles northwest of the Gulf of Mexico and 150 miles northeast of the city of Laredo on the Mexican border.
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San Antonio has about a 50% chance of sunshine during the winter months and more than a 70% chance during the summer months. Skies are clear to partly cloudy more than 60% of the time and cloudy less than 40% of the time. Average temperatures range from 50 degrees in January to the mid-90s in July and August. While the summer is hot, with daily temperatures above 90 degrees over 80% of the time, extremely high temperatures (100 degrees and over) and rare. Mild weather prevails during the winter months, with temperatures
below freezing occurring on an average of about 20 days per year.
Relative humidity is above 80% during the early morning hours most of the year, dropping to near 50% in the late afternoon. The normal annual rainfall is about 28 inches, with the heaviest amounts occurring during May and September. Measurable snow falls only once every three or four years.