15484 posts
Hi Viju,
Normally there wouldn’t be any snow in September. It can’t be entirely ruled out though in higher terrain like the Oberalp Pass, if it happens to be a colder day.
72625 posts
There was snow at the level of the Oberalp Pass when I left Switzerland in August as it had rained overnight and the snow level was down to 2000m (Oberalp Pass is 2044m).
However it was as high as 28 degrees C on the Glacier Express route today! Nevertheless the snow level is due to come down to 1500m by next Tuesday
The Swiss Met office forecast website has a section showing the predicted snow level and altitude at which the temperature will be 0C
see here: http://www.meteoswiss.admin.c h/home.html?tab=temperature
look for the section ‘temperatures’ on the left hand side