Went by my co-workers house yesterday that has the Tempest. Glad I did. He is not much on installing things. He just assumed it was working as it should and I judged the station by the data is was showing. Upon arrival, a closer visual inspection noted two things: First, the station was installed crooked. (He thought it looked straight when he installed) Second: It was kinda close to a tree. So I offered to move it and got the green light.
He picked an area more centered in the yard. Moved it and put a level on it. Right off the bat the temps and wind was responding like it should. The original location was shaded in the afternoon and tree limbs were most likely blocking some rain.
Overall I was impressed with the station. Impressed enough that when I got home I ordered one. And being the weather hobbyist that I am, I went ahead and ordered the install kit and bird deterrent also. Figured I will install on the backside of the post that has the CoCoRaSH rain gauge. This will give me a chance to personally check it out and compare quality and accuracy with them both. Plus, the dual setup will give me two different weather maps and apps. Just by looking over the Tempest website, looks like they offer more data. The lightning data being a biggie for me since I have four radio antennas outside that does not mix well with lightning.
I may later do a write-up and compare the offering and short comings of both the Davis and WeatherFlow. Until then, I will be waiting for the station to arrive on Monday.