Continuously measured weather data are of utmost importance for ecological and environmental field experiments in Bad Lauchstädt, Germany. For this reason, data were collected from different sources: i) handwritten records from weather stations at the experimental sites, ii) records from meteorological service of German Democratic Republic and iii), German Meteorological Service [Deutscher Wetterdienst, DWD]. The DWD had digitalized handwritten data before their recording started in 1991 and was therefore able to publish data going back to 1947. Historical data before 1947 are not yet published. Thus, starting in 2007 until 2018, the DWD did not operate their own weather station on site. The data of this publication intend to complete the time periods before 1947 and between 2007 and 2018 in a long-term data series. Our complete available data sets of extent weather information on site (1896-1955; 1997-2018) are presented additionally.