Temperature-insensitive calcium phosphate cements and methods of using the same are provided. Aspects of the cements include a dry component having fine and coarse calcium phosphate particulate reactants and a setting fluid which includes a cellulose. The dry component and setting fluid may be combined over a broad temperature range to produce a flowable composition. The resultant flowable composition finds use in a variety of different applications, including the repair of hard tissue defects, e.g., bone defects such as fractures.