Based on the analysis of historical Chronicles, an attempt is made to trace the trends in changing climatic characteristics of Northern Kazakhstan. It is shown that at a time interval of one and a half centuries such changes are quite clearly visible. So significantly increased the average annual temperature in the region. The climate of the region has softened, and its General characteristic has turned from «sharply continental» to «continental». The average annual rainfall has increased markedly. Changed phenological indicators: at a later date (about 1-2 weeks) began to establish snow cover and ice on reservoirs and at an earlier date, snow and ice cover began to disappear. The connection of natural and man-made disasters in the region with the rhythm of solar activity cycles and weather and climatic conditions is revealed. So historical catastrophic fires every time accounted for the era of maximum solar activity. And, on the contrary, catastrophic floods occurred mainly in the epoch of solar activity minima. Further changes in the direction of reducing the continental climate of the region are predicted. Taking into account this forecast is relevant from the standpoint of planning production activities.