Top 20 Coldest Towns in Spain
1. Vallter 2000, Girona. This ski resort, in the Pyrenees of northern Spain is located 2,180m above sea level. The most easterly resort in Catalunya, Vallter is a great place to go if you are looking to ski in the morning and go to the beach in the afternoon. Vallter is on average the coldest town in Spain, with an average low of -1.4ºC in January. Summers remain cool too with an average of 11ºC in July.
2. Nuria, Girona. This family oriented ski resort is located close to the France/Spain border in the Pyrenees, 1967m above sea level. The only access to this resort is by funicular railway from Ribes de Freser, 10km south. The coldest month on average is January with an average recorded low of -0.9ºC. In the summer 
temperatures rise to just 13.2ºC in August.
3. Sant Maurici, Lleida. A beautiful, rugged mountain region in the Pyrenees of Catalunya, the "Aigüestortes i Estany de Sant Maurici National Park" consists of lakes, rivers and leafy forests. Located approximately 35km from Andorra and 20km from the border with France, the lowest average temperature over the past 5 years is -3.1ºC in January and -2.7ºC in February.
4. El puerto de Leitariegos, Asturias. Located right next to the border with the province of Leon, 1525m above sea level, Leitariegos is a small ski resort with just 7 pistes, ideal for beginner skiers. As the crow flies, Leitariegos is almost equidistant from Leon, Oviedo and Lugo. The lowest temperature here, on average is 0.3ºC in Febuary, 1.5ºC in December and 1.6ºC in January.
5. La Molina, Girona. The oldest ski resort in Spain, La Molina is located 1704m above sea level and is approximately three and a half hours by train from Barcelona. The average lowest temperature over the past 5 years is -0.7ºC in December, then 0.6ºC in January. Temperatures rise gradually during the spring to an average of 15ºC in July.
6. Presa Cardena, Zamora. Located 1600m above sea level, in the Parque Natural of Lago de Sanabria in Castilla y Leon, very close to the borders with Galicia and northern Portugal, the lowest temperature recorded here on average over the past five years is 0.6ºC in January and 1.0ºC in February.
7. Genestosa, Asturias. A delightful town located 1280m above sea level, in the heart of Asturias, the lowest recorded temperature on average is 1.7ºC in January and 1.9ºC in February.
8. Port del Comte, Lleida. A family-oriented ski resort in the Pyrenees of Catalonia, located 1800m above sea level. Just 100km to the north west of Barcelona, this resort is easy to get to and located in a beautifully forested area. The coldest month here on average is February with -0.6 ºC, January 0.2ºC and December 0.3ºC.
9. Panticosa, Huesca. A relaxed ski resort located 1660m above sea level, close to the French border and approximately 170km from Zaragosa airport. There are 38 ski pistes here. Panticosa is also a spa town. The coldest month here is January (-0.2ºC), then February (0.1ºC) and December (0.6ºC).
10. Hoyos del Espino, Avila. Located approximately 130km to the east of Madrid and just north of the national park, Sierra de Gredos the coldest recorded month on average over the past 5 years is January (2.5ºC). Temperatures remain coolish in the summer months too, with a high of 15.7ºC in August and 15.5ºC in July.
11. Abadin, Lugo. A small town in Galicia, the north west corner of Spain. Winters here are cold and rainy and the lowest temperature on average over the past 5 years is 4.3ºC in December.
12. Xunqueira de Espada, Ourense. Also in Galicia, Xunqueira has recorded an average temperature in January of 4.9ºC making it the coldest month. The warmest month on average is August (15.8ºC).
13. Ezcaray, La Rioja. A tourist town in the wine region of Rioja in Spain, located 60km from Logrono, Ezcaray has a population of just 1,500 inhabitants in the winter, rising to over 15,000 in the summer. The winter months are cold here - average temperatures in January are 1.2ºC and 1.5ºC in December. Summers are mild, 15.8ºC in August.
14. Cabrillanes, Leon. 86km from the provincial capital of Leon, Cabrillanes is a small town located near the border with Asturias. Lowest average temperature is 1.3ºC in February, 1.6ºC in January and a rise to 15.9ºC in August.
15. El Fraile, Zamora. Situated in the Parque Natural of Lago de Sanabria in Castilla de Leon, nearby to Presa Cardena (no 6) the coldest month on average is January (1.4ºC), followed by February (1.7ºC).
16. Degaña, Asturias. Approximately 75km south west, as the crow flies, from Oviedo, Degaña is a place of great natural beauty in Castille y Leon. February is the coldest month here with an average low of 3.9ºC. Temperatures do rise in the summer though, up to an average of 16.1ºC in August.
17. Buferrera, Asturias. Located on the northern edge of the Parque Nacional de Picos Europa, 22km inland from the north coast and 1080m above sea level, the coldest month here is February (3.7ºC) then January 4.2ºC.