So I’ve mounted the Tempest in close proximity to the Sky and am getting significantly lower wind speeds. We’re currently having some gusty winds and the Tempest is consistently lower by at least 25%. I’ve even tried switching the 2 locations to rule out location bias and the results are precisely the same. I’m not sure if this is something a calibration can take care of, but it is a concern. My Sky was always in good agreement with my Davis VP2 for moderate to high wind speeds, but the Tempest is not in agreement with either the VP2 or the Sky.
The easier issue is a barometric pressure that’s high by about .04". I thought that perhaps there would be a calibration on that last night, but there wasn’t. Temp & RH seem good and the passive radiation shield seems to be doing a decent job with temps in the sun about 1 degree higher than a shaded location.