Car Alarm going off- randomly on it's own?

[fraochdha]

In the past 3 weeks, my stock car alarm has gone off on it's own, without harassment. The only uniting aspect between these occurrences has been that it's been wet or had just rained. I'm in So.Cal, so this is an odd parallel to draw. Is this a known problem, or better yet, anyone know why this might happen and/or know of a fix.

I've a 2008 CX-9 AWD GT w/ RSES.

Thanks!

P.