 It is the fourth-largest county in Pennsylvania by land area and fifth-largest by total area.It has a warm-summer humid continental climate ("Dfb") and average monthly temperatures in Wellsboro range from 22.8 °F in January to 68.2 °F in July.As of the census of 2000, there were 41,373 people, 15,925 households, and 11,195 families residing in the county.