A low pressure system coming from the Atlantic and trough of low pressure from near the United Kingdom will combine, leading to a few chilly, wet and wintry days across Spain Sunday into Monday. Lighter and more scattered rain and snow will fall across France as well.
The heaviest and most widespread precipitation will fall along the northern coast of Spain with rain falling at the coast and snow in the mountains. Rain amounts could exceed 25 mm (1 inch) along the coast.
In the mountains, upwards of 30 cm (12 inches) of snow can fall in the higher terrain. Snow levels are expected to be near 1000-1500 meters (3300-5000 feet) on Sunday, but will fall even lower Sunday night.
Not only will snow fall in northern Spain, there will also be snow in the Sierra de Gredos and Guadarrama mountains to the north and west of Madrid. Snow level here will fall to near 1200 meters (4000 feet) on Sunday night when 8-15 cm (3-6 inches) can accumulate.
The combination of cold temperatures and rain will make for an unpleasant day even in the lower terrain across Portugal and Spain. In Madrid on Sunday, the high temperatures is expected only to be near 4 C (about 40 F). This would make it the coldest day since last February. While it will dry out in the city on Monday, it will remain chilly with a brisk northerly wind.
Even along the southern coast of Spain temperatures will only be 10-15C (50-59 F).
As this disturbance moves into the Mediterranean during the middle of the week it will bring unsettled conditions to central Europe. While more seasonable air will return to western Europe during this time, showers will continue to affect the region.