In one embodiment, a working vehicle is provided with a condenser, a fan, a variable mechanism, a fan control part, an external air temperature sensor and a storage part. The condenser cools a refrigerant employed by an air conditioner. The fan cools the condenser. The variable mechanism can change the rotate speed of the fan. The fan control part controls the variable mechanism. The external air temperature sensor detects the external air temperature. The storage part stores a plurality of control diagrams of different rotate speeds of the fan, and the control diagram are set in dependence on the external air temperature detected by the external air temperature sensor. The fan control part controls the variable mechanism in dependence on one control diagram which is among the plurality of control diagrams stored in the storage part and selected based on the operation state of the air conditioner, thereby controlling the rotate speed of the fan.