As the title asks, what is the average mass of each kind of cloud? Ignoring things like overcast days, and only considering clouds large enough to identify. Or maybe rather than “average” it’d be better to say “what is the mass of an archiypical cloud of each type?” Eg an archiypical cumulus, cirrus, cumulonimbus, etc.
According to Randall Munroe (the author behind xkcd.com) in his book ‘what if? 2’ a house sized cumulus cloud, which would be very small for a cloud, contains roughly one litre of water, which in turn weighs 1 kilogramm.
If you want to look it up and somehow find a version of the book online, this information is in the chapter about the largest thing you could theoretically eat in one sitting (it’s the cloud).