In the past 100 years, the number of cold and frost days has decreased in most parts of Europe, whereas the number of days with temperatures above 25°C and the number of heatwaves have increased. The frequency of very wet days has significantly decreased in recent decades in many places in southern Europe, but increased in mid and northern Europe. Cold winters are projected to disappear almost entirely by 2080 and hot summers are projected to become much more frequent. This will have a continuing effect on mountain regions. For every 1°C increase in temperature, the snowline rises by 150 metres. And by 2050, three-quarters of today's glaciers in parts of the Alps are expected to have disappeared.
Source: State of the Environment Report No 1/2005 "The European environment - State and outlook 2005" (published 29 Nov 2005)