Jan 9, 2018 - 3:07 AM
in reply to MdtrneaMike
Hello M and Welcome to MySwissAlps,
You wrote "What I am trying to find out is if late June will be warmer than early June."
Typically yes. We were there last year between 18 May and 12 June. The temperature in Brig on 20 May reached 29°C and daytime max temperatures for the rest of our trip rarely dropped 2 or 3 degrees below that. It was t-shirt weather at top Mt Pilatus.
No guarantee but even early June it is likely you will only see snow at altitude.
If you want warm and no snow then Lugano is a safe bet. 😎