[7] The climate is humid subtropical (Köppen: Cfa) with an extreme temperature deviation, but much of the time, the variation is always more and the warm weather prevails over the cold as the averages and the records show.

Its subtropical location and south of the center of a large land mass bring occasional outbreaks even to a latitude and not very high altitude.

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

[9] Seymour is within the area underlain by Texas Red Beds, which are strata of red-colored sedimentary rock from the Early Permian.

The fossils of Permian-period vertebrates in the Texas Red Beds were first discovered by Edward Drinker Cope in 1877.

[13] The order Seymouriamorpha and genus Seymouria, which were first discovered in the Seymour area, are named after the city.

[14] As of the 2020 United States census, there were 2,575 people, 1,309 households, and 839 families residing in the city.

[19] Commerce, a newspaper, a hotel, and the county courthouse all followed soon after, as did violence between cowboys and settlers.

The town experienced two distinct economic booms; the first, short-lived, was with the construction of the Wichita Valley rail line in 1880, and the second was due to the discovery of oil in 1906.

Agribusiness, as well as some tourism from nearby Lake Kemp, has overtaken oil as the driving factor of the local economy.