My Vantage Pro 2 dew point goes up with the temperature for the first few hours of daylight and goes down with the temperature for the first couple hours in the evening. I have attached a couple screen shots of the WU temperature/dew point chart. The first is kind of extreme but shows clearly what the problem is and the second is more of what I normally see. I've seen a description of this somewhere but can't find it again, and I believe that there is even a term for this anomaly. If a description does exist, please point me to it.
The outside unit is located in an area in the back yard a foot or so off of the lawn over light leaf litter, and is about four feet off the ground. The temperature/humidity sensor area under the unit is clean. We've had a very humid year here on the east coast, but what I am seeing is fairly normal for my weather station. I also have a watering system for the lawn, so I expect that in a calm environment the humidity would be a bit higher at the station when and for some time after the lawn is being watered. But I believe that this is a bit unusual.
Thanks in advance for any comments and ideas about how to make this report more normally.
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