Download Realistic Weather Sound 1.6 mod by nIGhT-SoN for EUro Truck Simulator 2, working on 1.8.x and 1.9.x versions.
Better rain sound effects at exterior/interior of the truck. Read full description
Link1 Download (2MB) (sharemods)
# Download (3KB) (sharemods) – you need this mod too if you are using promods