You guys are WUSSES with only 94% humidity!!
My average speed is 14.5 or 15 on long rides. On Saturday's ride, it was 13. That means, under perfect conditions, I'm riding 18-20, but if I hit a hill, then that drops to 4-6 if it's a bad hill, and 13ish if the wind is bad. So no, I don't 13.5 is slow. That's about the average speed of the slowest rider in my group I like to ride with, which means that's the group's average speed.
On a long tour/ride- it's hard to raise your average speed (but also hard to make it worse!!).
Aerobars will increase your speed acouple mph or more, effortlessly.
Nanci
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"...I'm like the cycling version of the guy in Flowers for Algernon." Mike Magnuson