The paper analyzes the issue of late spring and early autumn cold waves. We present an evaluation criterion of these climatic hazard phenomena with a high degree of danger, which can damage the crops in their different development stages, vulnerable to the temperatures severe fall. The main climatic hazard phenomenon associated with these is the late spring and early autumn frost. Their occurrence can lead to significant economic damages. The paper analyzes weather severe cooling in the interval 25-29 March2013. Taking into account global climate warming and the increase of weather variability, it is expected that the frequency of these phenomena increases, as well as the degree of crop damage. The paper is useful to researchers in climate domain, agrometeorologists, master graduates and students.