Better sound on rainy days?

I've been thinking about this too! I can't say for sure if the sound is better or not when it's raining, but it does seem a little different. In my house I can hear the rain so it adds a sort of white noise to the background. I find I have the volume turned up a little higher when it's raining. Technically a speaker should be more efficient at generating sound if the air is cold and dry and the air pressure is high. How audible that is at naturally occurring extremes and whether it sounds better or worse as a result I don't know. Maybe there's some research on it. How the weather effects us physically might have a larger effect on our subjective evaluation of sound quality than any change in the actual signal reaching our ears.

FM reception as well as TV reception for those of you who use antennas can be better on rainy or cloudy days because the broadcast signals are being partially contained by the cloud layers that are keeping them from going off into the ionosphere.

I trust your findings but i never switch on on rainy days.

Prefer the sound of the rain, and to be safe.

As it happens, I just installed a TV antenna in my attic a few days ago. I am using it for the FM reception and my tuner is in the basement. I keep a close ear to the results, as I am very picky about this. Yes, it did rain the very next day, and even though there wasn't a noise level to worried about, the voices in the FM transmission were more clear. As the weather dried up the area, reception was still great but the music wasn’t quite as full. Signal strength remained the same.

Having said this, there is a notable mystery noise that comes from some sort of interference or noise from this area. It sounds like a control signal of some sort. When it comes to radio transmission/reception you can’t always have it all. The weather has no effect on this rare noise.

I wonder what the frogs are doing in the 360 days it does not rain in my area.

@yyzsantabarbara, They burrow into the mud and go into hibernation until it rains again.  Doesn't sound like much of a life, but I guess we all have to play the hand we're dealt.