I ride in all weather conditions and have the equipment for it, waterproof boots, rain suit etc. We don't get rain often here in Texas, but when it comes it's often of the tropical variety. I've learned that it doesn't make a difference what kind of rain suit you have, if it rains long enough, you'll get wet.
The best riding tip I can give is to not make any abrupt steering inputs either through the bars or by shifting weight. Modern tires have an amazing amount of grip in wet weather and you can ride to surprising lean angles.