Lauterbrunnen Valley

Assuming no storms (which you can never safely assume in the Alps):

On the valley floor, warm during the day, mild at night.

At the level of Wengen or Mürren, mild to warm during the day, mild to brisk at night.

At the Jungfraujoch or Piz Gloria, mild to brisk during the day, brisk to cold at night.,

I was in a whiteout "quick" blizzard in Wengen one early June. As quickly as it came it left. Weather is UNpredictable!

Weather is UNpredictable!

Just to emphasize further how far from the seasonal mean weather can deviate in the Alps... I've witnessed snow fall there during every single calendar month.

Thanks. We will be there as well in early June. When you say on the valley floor warm during the day, What temperature is warm? Also, approximately what temperature at night.

I do know there are no guarantees with weather and probably even more so in the Alps and with climate change. I'm just trying to pack light but make sure we all have enough warm gear. Thanks.

Best,
Suzanne

Don't pack any cold weather clothes, just bring a few things which can be layered for warmth. If you run into a freak run of cold weather, you can always buy something there.

Yes you can buy whatever you need. I think it's always good to have a shopping experience in Switzerland at least once...that way you can know first hand the sticker shock of Switzerland high prices :-) We always found some good bargains in the larger train stations and in the department stores like Manora.

The only thing I would consider packing specifically for the Berner Oberland would be a light jacket. If you get hit with some unseasonably cold weather and the jacket simply isn't enough, just buy what you need there.

Just layer and you should be fine. I usually take a base layer that is not bulky for times when I know I will be out in the snow (ex. Jungfraujoch visit). I have seen people in flip flops and sandals at the Jungfraujoch in June and they looked miserable in the snow. I do recommend good footwear you can wear in the snow.