Analysis of temperature measurements in the Polesye and the republic in general revealed the presence of two warmings during the period of observations (~120 years). The warming of the 1930's is of radiation origin and relates to the atmospheric purification from volcanic powder. The heating took place in summer. Modem warming is that of winter type. Its origin is related to the increase of greenhouse gases content in the atmosphere. Changes in precipitation taking place for of many years are of great complexity. In the south part of the republic during the postwar period the amount of precipitation decreased by about 100 mm when compared to the preceding half-century. In the north Belarus a rise of precipitation for the past two decades is observed. The amelioration of southern areas of Belarus and the adjacent territories resulted in temperature variation in southern part of our state by 0.3-0.4°C, precipitation by 10-35 mm in summer. Temperature and precipitation variation patterns differ in the first and second part of summer. Analysis of the range of daily temperature course, as well as temperature maxima and minima for big towns revealed anthropogenic "signal" that must stressed be while assessing variations in daily course ranges. Interpretation of the features of temperature variability in space and time in towns and suburbs was presented.