LOL, yeah, that would be one clever barometer wouldn't it.I really shouldn't post after consuming a couple of glasses of Baileys Irish Cream. In fact, the reading came from a very old mercury thermometer ( it was my grandad's). It is in a shelter position in the yard, though I can't swear to its accuracy, it has always been pretty reliable.
I'm without my weather station, it's still on the boat, I'll have to fetch it back.