In selected markets, McDonald’s is running a winter special on their signature sandwich: Buy one Big Mac at the regular price, get the second for yesterday’s noon temperature. For instance, if the temperature yesterday at 12:00PM was 12 degrees, you get your second Big Mac for just 12 cents! The colder the temperature, the cheaper the Big Mac! If the temperature was 0 or below zero, the second Big Mac is FREE.

This promotion is airing in the Minneapolis/St. Paul TV market which covers Central Minnesota and Western Wisconsin. It may be available in other markets as well. Cold days mean hot deals as yesterday’s temperature is the price you pay for today’s second Big Mac. Offer available for a limited time at participating McDonald’s locations.