Building in Navarro County
Navarro County is in north central Texas, bordered by Henderson, Freestone, Limestone, Hill, and Ellis counties, with the Trinity River along its northeast side. The center of the county lies forty miles south of Dallas. It covers 1,068 square miles, and Corsicana, the county seat, is on Interstate Highway 45.
Most of the land is level and rolling blackland, with open prairie and some oak, hickory, and pine woods. Bottom soils are rich black loam with some sand. Elevation ranges from 293 feet in the southeast to 536 feet in the northwest. Precipitation averages 37.74 inches a year, temperatures average 66°, and the growing season is about 259 days.
Thomas J. Chambers received the first Mexican land grant in the area on September 23, 1834. Settlers petitioned for a county carved from Robertson County, and the legislature approved it on April 25, 1846, naming it for Texas patriot José Antonio Navarro. A permanent seat was set in 1848 and named Corsicana for the birthplace of Navarro’s father. Over 200 million barrels of oil have come from the county since 1895.
NOAA’s Storm Events Database lists 46 hail reports in Navarro County from 2016 to 2025, 31 of them an inch across or larger, with stones up to 2.75 inches. The same records show 48 damaging thunderstorm wind reports, with gusts up to about 82 mph, and 10 tornadoes. That is why a patio cover’s roof panels, fasteners and posts here are chosen for hail and wind, not only for shade.