 This paper proposes a new methodology for assessing the climate suitability for wheat production. It uses a weighted climatic suitability index, WCSI, which combines multiple climatic criteria and weights them according to their importance. This allows for a comprehensive evaluation of the climate suitability for wheat production. The authors use three different climate projection models to determine the impact of future climate change on wheat suitability. They also select southern Syria as a case study to test the reliability of the WCSI. The results indicate that the wheat yield will decrease by 0.2 to 0.8 t. Ha one in the western parts of the study area during 2080 to 2100 due to projected climate change. These findings can be used to inform strategic planning for sustainable wheat production in the region. This article was authored by Karam al-Safadi, Shubin Bai, Hassan Ghassan Abdo and others.