I did this for Ultra Dynamic Sky originally. This BP is almost. You can do this in level BP instead of a normal BP, up to you. Brushify>Materials>Wind is the location. The Default values are found in MF_GlobalWind.

Make a new BP (actor) like above, note the delay is how often it'll update the settings. So when you have your settings set how you like you could pull it. https://blueprintue.com/blueprint/j4mydsa6/