According to the United States Census Bureau, the Hebbronville CDP has a total area of 6.3 square miles (16.2 km2), all land.

During the summer, rain is not common, but when a Gulf of Mexico hurricane moves inland it can be very heavy.

Temperatures decline slowly during the "fall" season, remaining hot through until the end of October, by which time most danger of flooding from a remnant hurricane has passed.

The winter months are warm and usually dry, although occasionally an easterly flow will produce substantial rainfall.

Frosts do occasionally occur during the winter – 9.9 mornings fall to or below freezing during an average winter – but measurable snow has fallen in Hebbronville only three times in 112 years – on March 10, 1932, on January 20, 1940 during South Texas' coolest month on record,[8] and on Christmas Day of 2004 when 5 inches or 0.13 metres fell in a famous "White Christmas".

Hebbronville is located on land which once formed part of Las Noriecitas, one of the earliest ranches founded in the area.

The town's namesake, James Richard Hebbron, acquired land, circa 1880, from the descendants of the original grantee, Ignacio Benavides.

The old train station at Peñitas was then loaded onto a flatcar, moved 1½ miles west and named Hebbronville.

For a time, Hebbronville ranked as the largest cattle-shipping center in the country, and it continues to be a hub of ranching activity.

A photograph of James R. Hebbron hangs in the Jim Hogg County Courthouse at 102 East Tilley Street in Hebbronville.

He was born in 1828, in London, England, but spent most of his adult life in California, mainly around Salinas, dying there in 1926.