We’ve switched from Centigrade to Fahrenheit - whatever the temperature at checkout is the discount you get in percent. But in Fahrenheit. Yes, Fahrenheit. If it hits 38ºC (100ºF) we’re going to get sunburnt.
It’s dynamic in the store and still supplied by the Met Office, but if you follow us on Twitter, we’ll tweet a discount code for the day’s forecast <http://twitter.com/socialsuicide>.