I only experienced rain/snow that one time. But since then I have been spending most of my time in a very brown region, so it's possible that the game thinks I'm in a desert and hasn't triggered a weather event.
Well, after 6 months of work, I finally finished the Godfrey Keep-Bartlet Cove rail line. Except, in the time it took to build, Godfrey Keep became Fortress Godfrey, which later became the Town of Godfrey. In that time I also built my monster Trap, Fort Jupiter, Mount Vulcan, a road network and Nether portal network that made the whole point of the rail line redundant... but it's nice that it is finally finished.
Also, I discovered Eihort
, which is awesome.