Two weather systems are set to bring widespread rain across the western United States, impacting the Four Corners region, the Great Basin, and the Pacific Northwest. Higher elevations in these areas may experience over an inch of snowfall. On the East Coast, a coastal system near the Carolinas will bring showers. The Plains are expected to remain mostly dry. Cooler, fall-like temperatures will settle over the Northeast and Ohio Valley, providing a seasonal change in those regions.