This study approaches the aspects of climate variability and change, which is an issue as necessary as it is current, in the context in which the natural environment of the Bâc river basin is in an accelerated pace of change. In order to confirm the climate change trends in the Bâc basin, the average, annual, monthly and seasonal maximum temperatures were analyzed for a series of basin meteorological stations (Chisinau, Cornești, Bălțata, Codrii). Finally, it was established that the main thermal indicators, in the current period, due to anthropogenic activity have become significantly variable, with a general tendency to warm. Meteorological statistics were provided by the State Hydrometeorological Service for a homogeneous series of data.