At the stick house, I had a complete Davis weather station and enjoyed logging the weather. I miss that on the coach, especially the wind speed. We're always guessing what speed the gusts are and it's important to know due to our Datastorm dish (good to 40mph when it needs to be lowered.)
I wanted to find a low cost solution and I came up with a good one I think. This is the link
for the model I bought. It was only $75 and it seems to work real well. One reason the price is so low is that they use a bicycle computer for the display; it sounds clunky but it is a very effective display.
I mounted the anemometer to the top of the ladder and brought the wire in through the roof near the rear TV compartment. I'll get some project pictures posted sometime this week on our web site.