Overcast environment in HDRP

Use HDRP volumetric clouds but they are supported only in 2021.2 version
I cannot find the documentation of it so here is the forum which can help u :-

U can also use cloud layer which is available in 2020 versions
https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@10.0/manual/Override-Cloud-Layer.html