Total lunar eclipses are visible from half of the globe, so weather prospects are not such a hot topic as for total solar eclipses where the path of totality occurs along a narrow corridor of the Earth. That being said, it is still worth noting where the total phase of this eclipse of the Moon is visible from and what the average cloud cover is experienced in these countries. The diagram below shows the mean cloud cover across the globe for January.
Creator of eclipse Google Maps files and author of Solar Eclipse Maestro software, Xavier M Jubier says
Australia is the most appropriate country to observe this total lunar eclipse from as the chances of clear skies are excellent, moreover with nice landscapes and a good road network.
As well as Australia, most of central and eastern Asia also have good average weather prospects for the eclipse. Of course all of this is very speculative and actual local weather forecasts are impossible to predict until the days leading up to the eclipse itself.
One of the areas with less than favourable weather conditions would be Europe, however the eclipse is not visible from this area of the globe anyway so no opportunities lost. Europe will witness a total lunar eclipse at a much better time of year weather prospect wise on 27 July, 2018.