Go to http://www.weatherpost.com, then click on Historical Weather.
Then, put Switzerland in the blank that comes up on the left. They
will be presented with the choices of Berne, Geneva and Zurich. Clicking on
any of those will show a 15-20 years average of average high, low,
precipitation, month by month. Berne does not show precipitation for some
reason...the others do. For Zurich, May is one of the higher rainfall months
- but that is only an average of 4 inches, and is lower than June, July or
Sally Watkins, CTC