December weather forecast
Maryland, USA

December heralds the onset of winter in Maryland, with temperatures typically ranging from 30°F (-1.1°C) to 50°F (10°C). The state experiences a substantial drop in temperature compared to November, and the landscape transitions into a winter wonderland, particularly in the western portions.

The coastal areas of Maryland continue to experience milder temperatures due to their proximity to the ocean, but even these regions are not immune to the cold. The humid subtropical climate gives way to more freezing conditions, while the western part of the state, influenced by a humid continental climate, prepares for snow and freezing temperatures.

Snowfall becomes a significant feature in Maryland's winter, particularly in the western highlands. The Allegheny Plateau and Appalachian Mountains can receive between 30" (762mm) and 40" (1016mm) of snow during the season. The town of Oakland is renowned for its heavy snowfall, often exceeding 100" (2540mm) annually.

Frost becomes a daily occurrence, and nights can often register below 0°F (-17.8°C), especially in the western regions where the Appalachian Mountains provide some barrier from arctic cold. Cold fronts, cyclones, and anticyclones contribute to rapid changes in weather, sometimes leading to blizzards and icy conditions.

Outdoor activities shift towards winter sports, such as skiing and snowboarding, particularly in the mountainous areas. The snow and cold create a festive atmosphere, aligning with the holiday season.

Compared to November's transitional weather, December firmly establishes the cold and snowy conditions that define Maryland's winter. The contrast with the mild and colorful autumn is stark, as the state embraces the chill, snow, and unique beauty of the winter season.

December's weather in Maryland offers a blend of serene snowy landscapes and harsh cold, with varying conditions across the state. From the milder coastal regions to the snowy western highlands, Maryland's December weather is a multifaceted experience that marks the beginning of the winter season.

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• Baltimore - December »
  In Baltimore, in December, during 2.2 snowfall days, 0.63" (16mm) of snow is typically accumulated. In Baltimore during December, the rain falls for 10.1 days and regularly aggregates up to 2.36" (60mm) of precipitation.
• Frederick - December »
  In Frederick during December, snow falls for 3.2 days and regularly aggregates up to 1.69" (43mm) of snow. The months with the highest humidity in Frederick are May, October and December, with an average relative humidity of 79%.
• Rockville - December »
  With an average of 9h and 30min of daylight, December has the shortest days of the year in Rockville, Maryland. January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine in Rockville, Maryland.
• Gaithersburg - December »
  The months with the lowest UV index in Gaithersburg are January, February, November and December, with an average maximum UV index of 2. The months with the least sunshine in Gaithersburg, Maryland, are January, February and December, with an average of 5.1h of sunshine.
• Bowie - December »
  In Bowie, Maryland, in December, during 9.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Bowie, in December, during 2.4 snowfall days, 0.63" (16mm) of snow is typically accumulated.
• Hagerstown - December »
  In Hagerstown, during December, snow falls for 5.2 days and regularly aggregates up to 2.17" (55mm) of snow. In December, in Hagerstown the rain falls for 11.2 days.
• Annapolis - December »
  The month with the shortest days in Annapolis is December, with an average of 9h and 30min of daylight. In Annapolis, in December, snow falls for 1.5 days, with typically accumulated 0.12" (3mm) of snow.
• College Park - December »
  In College Park in December, it is raining for 10.6 days, with typically 2.68" (68mm) of accumulated precipitation. In December, in College Park, Maryland, the rain falls for 10.6 days.
• Salisbury - December »
  In Salisbury, Maryland, in December, during 10.6 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. The month with the shortest days in Salisbury is December, with an average of 9h and 30min of daylight.
• Laurel - December »
  January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Laurel, Maryland. In Laurel, in December, it is raining for 10.3 days, with typically 2.2" (56mm) of accumulated precipitation.
• Greenbelt - December »
  The month with the shortest days in Greenbelt, Maryland, is December, with an average of 9h and 30min of daylight. In Greenbelt, Maryland, during December, the rain falls for 9.8 days and regularly aggregates up to 2.6" (66mm) of precipitation.
• Cumberland - December »
  In Cumberland, Maryland, in December, during 7 snowfall days, 1.81" (46mm) of snow is typically accumulated. In Cumberland, in December, during 7 snowfall days, 1.81" (46mm) of snow is typically accumulated.