This article discusses one of the key stages in the ontogenesis of winter triticale - the winter period, which affects the state, further growth, development and crop yield. The coefficient of winter severity is calculated, an assessment of natural hazards and their impact on the state of wintering plants is given. Long-term data of the meteorological observatory named after V.A. Michelson RSAU-MTAA named after K.A. Timiryazev. A comparative analysis of the results of field observations was carried out, as well as the resistance of the culture to unfavorable conditions of overwintering was determined. Studies show a high probability of various hydrometeorological risks and negative processes typical of the winter period of recent decades. The results make it possible to assess the impact of unfavorable agrometeorological conditions on the safety of overwintering plants.