Against the background of the increasing number of natural hazards, studies on the dynamics and seasonal differentiation of dangerous and adverse natural phenomena are becoming relevant. The article proposes and analyzes the indicators that in one way or another limit the effectiveness of the forest complex in the Tomsk region. Seasonal features of manifestation of the main negative factors influencing both forest raw materials resources of the region, and conditions of logging activity are revealed. It is shown that the main contribution to the risk forming potential of the summer period is made by very strong winds, abnormally hot weather and atmospheric drought. The conclusions made by the authors on the basis of statistical analysis of a long-term series of meteorological data for the last 30 years can be used to develop regulatory requirements for the formation of a strategy for sustainable forest management in the region.