https://blogs.mercola.com:443/sites/vitalvotes/archive/2003/09/04/How-Much-Does-a-Cloud-Weigh.aspxI am certain this is something many of you or your kids always wondered. Well get ready for a shocker. The water vapor in a very simple white puffy cloud--a cumulus cloud--weighs about 550 tons. ABC News September 3, 2003enCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)