December begins the cold winter season in Massachusetts with gloomy skies and abundant snow. The average high temperatures are in the 33°F (0.6°C) to 45°F (7.2°C) range, while the average low temperatures lie in the 17°F (-8.3°C) to 31°F (-0.6°C) zone. Western Massachusetts receives heavy snowfall, and the trend continues in the central region, with the least amount of snow in the coastal belt. The cold air masses from the Arctic sweep the state without any restrictions as the valleys tend to hold on the cold air. The ocean waters are cold but above freezing and keep the temperatures in check in the nearby regions. The sunshine is at a premium even during the warmest days, which makes it mandatory to wear heavy winter coats. Heaters run incessantly at homes and offices, and it takes considerable time to heat the interior of vehicles in order to start and operate them. White Christmas is common in Massachusetts during the cold days of December.