In Polish climatic conditions rainfall constitutes the main source of water for vegetation. The climate of Poland is characterized by high temporal and spatial variation. The total amount and seasonal distribution of precipitation show significant variability. The aim of the study was to analyze spatial changeability of rainfall in Central Poland. Data concerning rainfall were collected during the vegetative seasons of April - October in years 2013 - 2015. Analysis of the results confirms the observation which states that there is a great spatial variability of sum of precipitation, its maximum amount and intensity as well as the length of dry and rainy periods. Significant differences were observed between the stations located very close to each other. On the basis of obtained results it is stated that the rainfall must be measured directly on the area for which the water balance is to be estimated.
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