Abstract: Data of observed temperature, wind speed and precipitation from three meteorological stations in and around the Dawu wind farms from 1993 to 2016 were selected, and the temperature, wind speed and precipitation changes since the wind farms started producing energy were analyzed. The temperature, wind speed and precipitation before wind farms were operational were compared with those same factors after the wind farm became operational. The effect of the wind farm operations on regional climate was analyzed by temperature difference, wind speed ration, and precipitation ration between areas affected and unaffected by wind farm operation.The analysis showed that the local climate changed as a result of running the Dawu wind farms: temperature increased and wind speed decreased. However, the degree of influence is less than natural interdecadal variation in climate, and the wind farm operation had no significant effects on precipitation. Because the wind farms have only been operational for a short period of time, and observations from meteorological stations are subject to the impact of many factors, the local climatic effect caused by the construction of wind farms needs to be verified with observation statistics and analysis over a longer time.