Dear Dr. Alhroob,

You may check the following portals and official websites:

*****************temperature data in decades******************

https://climateknowledgeportal.worldbank.org/download-data

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https://vre.vi-seem.eu/index.php/regional-community-datasets/climate-datasets

http://search.diasjp.net/en/dataset/APHRO_ME

https://www.meteoblue.com/en/products/historyplus/download/dubai_united-arab-emirates_292223

http://www.euro4m.eu/datasets.html

They provide a large number of historical and future climate data, precipitation data, and regional weather/temperature datasets, such as the middle east.

All the best.