Abstract: Based on the continuously observed cloud data collected from Wulatezhong county from 2005 to 2011 and Linhe district from 2006 to 2008, the annual and monthly mean value of difference value between the lowest ground temperature and the minimum temperature during 2 am to 7 am at night in the above two regions were analyzed by using mathematical statistics method and meteorology principle. The results showed that there was positively related linear relation between the lowest ground temperature and the minimum temperature both in Wulatezhong county and Linhe district, and the relation between them was closely related to the different weather conditions but was little related to the differences between various observation stations and spring and autumn. Based on the individual similar effect of various weather conditions on the difference value between the lowest ground temperature and the minimum temperature, four forecasting models of the lowest ground temperature on the basis of the minimum temperature were established. The result of correlation test of the models proved the good consistency between them and the established formula passed the significance test. The model established in this study may provide a reference for the short-term weather forecast in the two regions.