Murren/Lauterbrunnen/Wengen/Grindlewald relatively easy trails in late May?

If the snow has melted enough you can try the hike from Mannlichen cable car station above Wengen to Kleine Scheidegg...it's mostly flat. Also the valley floor hike from the Stechelberg cable car station (or Trummelbach Falls) to Lauterbrunnen should be easy on knees. Both described in Rick's excellent and informative guidebook.

craig, Depending on the severity of your "bad knees", one fairly easy hike you might consider is the walk down from Allmendhubel. Take the Funicular up from Mürren and then walk down. THIS Photo provides an example of part of the route (that's a hotel/restaurant on the left, where you can stop for a "cool one"). Although it's downhill, the slope is very gradual and it may not cause you too much trouble. You'll walk through alpine meadows with cows grazing (you'll hear the bells). I can't remember if the slope changes a lot at the end, but don't remember it being too steep. I don't know if the Funicular will be operating in late May (I'd have to check). Happy travels!

Here's how things look right now at Männlichen. Doesn't look too promising for hikes.

Wow, there is still a lot of snow! Is it sticking or does it disappear then next morning? I suppose we won't be seeing alpine flowers, green pastures and cows even if the trails are walkable? We knew May is risky weatherwise but we'll make the best of it. Ken, from the webcam link provided, it shows the following are open. Is one of them the one you are wondering about?
Männlichen: gondola Wengen-Männlichen open! | Männlichen: trail to the sumit and Spycherbar open! | Kl. Scheidegg: Wengernalp- and Jungfraubahn open! | First: the ondola is in operation

Craig we visited Wengen in August one year and loved the hikes suggested by Micheal, but locals told us that they had snow on those trails right through June that year,, so yes, May is still risky . If weather is good those are perfect hikes, very gradual trails, lovely amazing views, and a nice place to eat a lunch before you catch a ride down to Wengen . We walked the rest of the way down to Wengen following what appeared to be a goat path, lol , my knees were killing me , it took hours of switch backs, definitely take train down!

"Is it sticking or does it disappear then next morning?" The snow you see on the webcam is mostly left over from the winter, plus a new dusting. Although the trend at this time of year is for the snow to gradually melt, it's mostly still going to be there during your trip. And where there's no snow, you'll find plenty of mud.

Wow! Chris, thanks for the pan-cam links. That looks like wind-driven snow and dense fog.

Chris, the link doesn't take you directly to the Männlichen cam (the default setting is the Jungfraujoch), but if you look on the top of the image, there's an option for pulling up additional cams. Click that button, and you can access the view from Männlichen. As of right now, looks like conditions are a complete white-out.

Yes, I just looked at Mürren's Hotel Eiger webcam this morning to see the blanket of snow on the rooftops and trees and grass. I'll be there on the 7th...please please please give us some sunshine and blue sky!

Chris, excellent Twitter feed! Re: "They (weather men) are now saying temps will rise mid week...lol"
- I know someone who likes to laughingly say, "All meteorologists are Communists." :)