I love the sound of the rain. It has always created a tranquility for me. It falls in a steady rhythm, and can be very lulling to a busy mind.
I've always loved the smell that it brings too. Whether town or country, the rain accentuates the scent of outdoors. Rain also brings negative ions into the air, helping you to breathe in more oxygen. This is great for added concentration, and lifting your mood.
I prefer to walk in the rain, no matter how hard it's falling. But you can still get the benefits that the rain brings by being under an umbrella out on your deck, or even just standing at the back porch. Be sure to catch some in a bucket though. Rainwater is absolutely fantastic for your hair.