Watch the rain without putting on a playlist. Let it be the only thing playing for a while.

Adding a soundtrack turns a moment into a scene, and a scene is something you watch yourself be in. Letting rain be the only sound takes the camera away, so there is nothing to arrange and nothing to make it mean. Unaccompanied attention is rarer than it sounds, since most of the day has a second track running underneath.

Next time it rains, sit by a window for ten minutes with nothing playing. Let it be boring, because boring is part of what you came for. When your hand goes for your phone, leave the phone where it is. See what your head does once it stops being entertained.