Liberty and Danevang are the two closest USHCN stations to Houston, on opposite sides. Like in Liberty, USHCN has adjusted a cooling trend into a warming trend by making the past colder. The graph below shows USHCN maximum temperatures adjusted minus raw. The present was adjusted upwards, while the past was adjusted progressively downwards.
Note that USHCN is hosted by the Carbon Dioxide Information And Analysis Center (CDIAC.)