Building in Fannin County
Fannin County is in Northeast Texas on the Oklahoma border. Bonham, the county seat, is fifty-five miles northeast of Dallas. The county covers 895 square miles, mostly blackland, with a claypan area in the north near the Red River.
Moderately rolling hills spread across the county, with elevations from 500 to 700 feet above sea level. Rainfall averages a little over forty-three inches a year. The Red River and Bois D’Arc Creek drain the land, and many springs supply water. January minimums average 33° F, July maximums 94°, and the growing season lasts 228 days.
The Texas Congress approved the county on December 14, 1837, naming it for James Walker Fannin, Jr., a martyred hero of the Texas Revolution. The seat moved from Jacob Black’s cabin to Warren in 1840 and then to Bois D’Arc, which was renamed Bonham in 1844 for Alamo defender James Butler Bonham. Early settlers came mostly from the South, especially Tennessee. Agriculture supported the county, with beef cattle the leading product.
NOAA’s Storm Events Database lists 61 hail reports in Fannin County from 2016 to 2025, 59 of them an inch across or larger, with stones up to 2.25 inches. The same records show 49 damaging thunderstorm wind reports, with gusts up to about 100 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.