I have three Weathershields. I have them side by side. The pressure and temp are pretty close but the humidity is all over the place. Any suggestions? Below is a screenshot of the gateway. The ones listed "basement" and "garage" are both Weathershield R1s. The other is Weathershield R2. I have made sure I had the correct sketch.
https://imgur.com/gallery/iRqx5
Unfortunately I see the same thing with my old R1s which used the BMP180 sensors for humidity, they seem way off for humidity.
The BME280 on the R2s seem to be much better/closer to reality.
I chose the "best in class" sensors at the time of development, and currently BME280 is one of the best sensors you can buy, Bosch being esteemed as a high quality sensors manufacturer.
I don't know why such expensive sensors would behave like this after just a few years, even not exposed to elements. My only hope is the BME280 will not drift or at least not so badly. Humidity is difficult to measure accurately in general.
I have no idea why they'd act like this. I do appreciate you using the best possible parts. I may have to upgrade my two R1s to R2s. Not looking forward to delsoldering. I don't have the best equipment for that.