An apparatus for controlling platooning based on weather information includes a processor configured to determine a weather environment state on a platooning path based on weather forecast information received from a control center or weather information measured by a vehicle sensor, determine a sequence of platooning based on the weather environment state, determine a level of the platooning based on the weather environment state, and perform control of a transverse vehicle-to-vehicle distance or control of a longitudinal vehicle-to-vehicle distance of a vehicle based on the measured weather information and the determined level of the platooning.