Sunday's Weather Outlook

A dynamic weather pattern will unfold across the U.S. on Sunday, bringing a mix of heavy rain, gusty winds, and even the season’s first significant snowfall to parts of the Northwest

A coastal system will track toward the Mid-Atlantic and New England, delivering moderate to heavy rainfall and isolated thunderstorms. These conditions could lead to localized flash flooding, especially in low-lying and urban areas. Breezy to windy conditions will accompany the system, making for a blustery end to the weekend.

Meanwhile, high pressure will dominate parts of the Nation’s Midsection, promoting mainly dry and tranquil conditions from the central Mississippi Valley and Great Lakes to the southern Plains and Deep South. However, a weakening disturbance lingering over the eastern Great Lakes may still spark a few scattered showers around the Lake Erie region.

Out west, a cold front will sweep across the Four Corners region during the morning hours, pushing out lingering rain activity. As the front moves through, a mix of rain and wet snow is possible over the central Rockies, signaling the seasonal transition. Tropical moisture will also continue to fuel showers and thunderstorms across over parts of the Southwest, central to southern Rockies and even southwestern Texas.

Further north, showers and storms will shift eastward across the northern Plains and into the Upper Midwest. Behind the departing system, cold air will wrap around a developing low over the northern Rockies and Cascades. This influx of cold air will usher in the season’s first significant snowfall across the Cascades, northern Rockies, and northern Intermountain Region, with the heaviest accumulations likely in higher elevations.

Temperature-wise, highs will range from the 80s and 90s across much of the central and southern U.S., while the Mountain West will see cooler readings in the 30s, 40s, and 50s. Elsewhere, expect highs in the 60s and 70s.