The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[6] As of the 2020 United States census, there were 5,118 people, 1,978 households, and 1,225 families residing in the city.

In 1787–1788, Spanish explorer José Mares crossed the creek near the site of present Brady.

Henry and Nancy Fulcher, the first settlers on Brady Creek, donated land for the townsite in the mid-1870s.

Poultry, sheep, goats, cotton, and pecans joined cattle as important sources of income for area residents.

When the Fort Worth and Rio Grande Railway arrived in 1903, Brady became a principal shipping point for Central Texas.

By 1914, the town had grown to include four churches, two schools, two banks, several processing plants, manufacturing and supply outlets, and 2,669 residents.

In 1926, Brady residents celebrated the building of 42-acre Richards Park by holding a two-day barbecue on the Fourth of July weekend; it was such a success that the celebration was labeled the "July Jubilee" and became an annual event.

Brady Reservoir was completed in 1963 for flood control, municipal and industrial water needs, and recreation.

The Atchison, Topeka and Santa Fe abandoned the track between Brady and Eden in 1972, leaving the town with only a branch track to connect it with the main line at Lometa, in Lampasas County.

Brady Middle School consists of grades 6–8 and the principal is Shona Moore.

Brady High School consists of grades 9–12 with Russell Baldwin as principal.

Brady High School is a Texas Education Agency "Recognized" campus.