In the present work, we are focused on monitoring the year-on-year changes in the density and length of closing cells of the stomata in the European beech (Fagus sylvatica) of various provenance, due to the climatic factors of the habitat. Observed individuals are planted in the research area Tále near Zvolen. 9 provenance were evaluated and 6 subjects were monitored in each. Using the photos of the imprints from 2016 and 2018, the morphological characteristics of the stomata were measured, namely the stomatal density (SD) and the length of the closing stomatal cells (LA). We put this data into the meteorological data from the decisive period for the creation of stomata. For our analyzes we used climatic data from the meteorological station Kráľová near Zvolen, focusing on daily precipitation totals and maximum and minimum daily temperatures during the years 2015 and 2017. We used data on the stomatal density and length of closing stomatal cells from 2016 and 2018, because the climate of the past year's season is crucial to their creation. We have found that individuals of different beech origins respond differently to environmental conditions. In a simple correlation analysis of the influence of selected meteorological characteristics of the environment, we conclude that the stomatal density and the size of their closing cells.