Despite the increasingly advanced development of technology and its importance for human life and activity, our dependence on the climate is undeniable, especially in the current period due to climate change. Thus, climatic phenomena with a risk aspect become more and more dangerous for everything alive and especially for humans, due to the random character of their manifestation. Among them are the frosts, which are quite dangerous when they occur outside the typical season. Frosts are observed in late spring, when agricultural crops are in an active phase of development, and in early autumn, when the fruit has not been harvested yet, causing frostbite or even the death of some crops/plants annually on the territory of the Republic of Moldova. Along with the changes that take place at the regional climatic level, there are also changes regarding the date of their manifestation, therefore for the present study we analyzed some of the parameters that are characteristic for dangerous frosts: the extreme dates of the manifestation of the first and last frost and the duration of the frost-free period specific to them. We should mention the fact that the frost-free period is an indicator that’s directly proportional to the duration of the period of active vegetation of agricultural crops in which they manage to pass through all the phenological phases of development. Data was collected from the archives of the State Hydrometeorological Service from 14 meteorological stations. The resulting database obtained was statistically processed using Microsoft Excel and Statgraphics software, and the spatialization was carried out in ArcGIS 10.2. Two time periods of 30 years each (climate periods), which include the years 1961-1990 and 1991-2020, were subjected to the spatio-temporal analysis. The results obtained from the data analysis show us some obvious changes regarding the extreme date of the last frosts for the period 1991 - 2020, which know an advance towards the warm period of the year by about 10 days compared to the period 1961 - 1990, which tells us about the shrinking of the growing season. Also, the date of occurrence of early frost knows some changes. It manifests itself about 6 - 13 days earlier, which represents an advance towards the warm period, thus reducing the vegetation period. As a result, there is also a change in the frost-free period, which shows a decrease for Baltata and Tiraspol m.s. respectively by about 10 and 3 days recorded in the period 1991 - 2020 compared to the period 1961 - 1990. The information is of interest to farmers for the correct placement of thermophilic plants, as well as for establishing areas favorable to them. Another aspect regarding the need for this study is the establishment of the optimal sowing/planting period of different agricultural crops in order to optimize the process of their active growth.