This paper deals with the influence of outside temperature, outside humidity and wind speed
to the temperature inside the wall. Data come from the sensors located in the wall and the
weather station located on the roof of the building. September 2017 was the considerated
period. Analysis shows that there is a strong correlation between the outside temperature
and the temperature inside the wall. The correlation between wind speed and the temperature
inside the wall is poor, the same like the outside humidity.