Baltimore, MD – A colder and more active weather pattern is setting up across Maryland from Nov. 29th through Dec. 5th, bringing a mix of cold rain, wintry precipitation, and early-season snow as December begins.
According to NOAA’s Climate Prediction Center, temperatures during this period are expected to run below normal across all of Maryland, including coastal and urban regions around Baltimore, central counties like Howard and Montgomery, and the colder western highlands near Garrett and Allegany counties. Overnight lows in interior and mountainous areas could fall below freezing, enhancing the chances for accumulating snow.
NOAA’s precipitation outlook also shows a strong above-normal precipitation signal, suggesting several disturbances may track through the Mid-Atlantic throughout the first week of December. Baltimore and the I-95 corridor appear most likely to see cold rain, though brief periods of rain–snow mix can’t be ruled out during early-morning hours.
Western Maryland — including the Appalachian Plateau, Deep Creek Lake, and elevations along I-68 — carries the highest probability for accumulating early-winter snow, with multiple light-to-moderate rounds possible if storm timing aligns with colder temperatures.
Central and southern Maryland, including Annapolis, Waldorf, and the southern Chesapeake region, are expected to remain mainly rainy, with only minor mixing potential.
Forecasters emphasize this pattern does not point to one major winter storm but instead a series of weaker systems capable of causing slick roads, low visibility, and commute delays, especially during temperature drops overnight and early morning.
Residents across Maryland should monitor updated forecasts as the rain–snow line shifts from region to region throughout the week.
