http://www.accuweather.com/world-forecast.asp?partner=accuweather&traveler=0&locCode=EUR|DE|GM006|HAMBURG&metric=1 (http://www.accuweather.com/world-forecast.asp?partner=accuweather&traveler=0&locCode=EUR%7CDE%7CGM006%7CHAMBURG&metric=1)
...wrap up well on the night...
(thanks BB)