bab, yeah, I'm over on the west coast. 90 to 100% relative humidity is quite common. And it SUCKS! It's like riding into a 10 mph headwind. The air is heavy and stale and you start sweating just buckling your shoes! Water intake is a necessity, but as mentioned above, you need salt to retain the water. A couple bites of beef jerky about 2 hrs before the ride really helps!
L8R
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger