I have probably logged thousands of miles in the rain - especially on the cross country trips. Here is advice:
If it is a short trip (cross town, less than an hour of riding) then just lump it. Keep your visor cracked but not open so that you don't get fogged up.
The most dangerous time in a storm is the first 30 minutes when the rain is still washing oil off the roads, the drivers aren't 'used to' the weather change, yada yada yada. That, and misting - a light constant mist is just horrible. If you are stuck in 3 hours of rain from Tallahassee to New Orleans once you get past the first 30 minutes the next 2 1/2 hours are only miserable
<div align="center"><span style='font-size:15pt;line-height:100%'><span style='color:red'>Wet pavement requires smooth movements, no jerky acceleration, no jerky deceleration, no hard lane changes, etc.</span></span>[/Quote]
If you are feeling froggy, wet weather and lonely roads are a great place to learn the traction limits of your tires . . but also be prepared to learn the impact strength of your bones at the same time
Kevin is correct, proper turn entry speed is achieved PRIOR to entering a turn, not once you are in the turn. <span style='color:red'>Once you are in the turn braking almost always makes a bad situation worse</span>whether it is rain, sand, bumps in the road, alien spacecraft landing, etc. Even rolling off the throttle shifts weight from the rear of the bike to the front of the bike and will cause a lowside.
For cornering in the wet you must first be comfortable cornering in the dry. If you'd like to take a ride and experiment with the maximum traction and lean angle of your bike then allow Diesel and I to extend to you an open invitation
Seriously, learn counter steering, turn entry points, turn exit points, throttle control, etc. Don't assume you know those things, LOTS of very good riders do it on instinct without knowing what they are actually doing. Once you have dry turning solid in your head then wet turning is exactly the same, except with tighter tolerances. My suggestion is to go learn tight turns somewhere that if you wreck it will only be at about 30mph (there are places that can be found where a 30mph turn is at the very least challenging). Wear good gear and bring your cellphone
<div align="center"><span style='font-size:15pt;line-height:100%'><span style='color:red'>In the rain it is important to remember all of your thresholds just went down and your distances went up. Traction is down, stopping (distance)is up, lean angle is down, acceleration (distance) is up.</span></span>[/Quote]
Now, here is a suggestion - go get yourself a set of 'frog togs' at least the jacket part. They are breatheable, lightweight, rollup real nicely and are practically disposable. Get caught in the rain and at the very least you can throw them on under an overpass and stay dry enough to not be miserable.
In the south, the rain doesn't always mean cooling off, so the frog togs are nice. In the north, rain and cold often come hand in hand and it is important to remember that whatever the ambient temperature is you need to subtract 30 degrees farenheit to compensate for wind chill on the bike. Either way bring a standard rain jacket that has elastic at the wrists to keep the wet out. Don't go for the hunters supply rain jacket thinking it is just as good, it isn't. Get yourself something designed for motorcycling. First Gear has good stuff.
Another sidebar is that a rain jacket makes a GREAT windbreaker and you can ride with your armored jacket underneath your rain jacket and stay pretty darned toasty.
Coldest winter ride to date = 18 degrees Farenheit in the sleet from El Paso Tx to Austin over Christmas. Literally had icicles on the side and back of my helmet.
Worst rain = coming back from Deals Gap on I-75 just south of Atlanta, rain was so hard that the freeway was flooded and I had water up to my pegs.
I am sure I'll have more stories after PFC Poole (brother) returns from overseas and we have the "<span style='font-size:15pt;line-height:100%'><span style='color:seagreen'>Back from Iraq - Tampa to Seattle</span></span>" ride - will keep you posted.