Oh yes, air temperature affects jetting. The hotter it gets the richer your bike will run, as hot air is not dense air. That's why hot air rises. Humidity affects jetting too. The more humid it is the more air that is going in there, and the leaner it'll run.
Humidity sometimes acts wierd though as more water is going in too.
It would be nice if NW Maico or somebody would allow us to trade jets as once it's done you don't need them any more. Tnx Bob for the new section for info to be passed on. Have I been busy. This is for the Ohlins with Grooved knob at the bottom of shaft. This will have a tendancy to stiffen the boot a little but it will work and is permanent compared to duct tape etc.