Full Moons and Meteor Showers in Montana for 2021 During the last weekend in March, the Bitterroot Valley night skies cleared for some views of the Full Moon for the month (see photo above) - called the Worm Moon by some Native Americans. The dark skies that the Montana rural areas are known for can be great ways to spend some outdoor time, watching satellites pass overhead, regonizing the constellations, seeing a few meteors and enjoying the full moon rise over the eastern horizon. But if you don't know what's coming, you'll miss some extra special nights. Let's check the Full Moon schedule: