Weather data used as inputs to ETCalc, an online evapotranspiration calculator (Danielescu, 2021 and 2022). The online calculator is at https://etcalc.hydrotools.tech/pageMain.php. Daily potential evapotranspiration (PET) was estimated based on the Penman Montieth method. The input and output data along with meta data to run the calculator are provided in separate tabs of the excel file. The first tab provides additional meta information.