by Phil » Wed Jan 11, 2017 11:25 am
There aren't any serious water crossings anywhere on the JMT between the Cathedral Lakes trailhead and Yosemite Valley. The only one that might be of even the slightest concern in terms of getting a little wet if you can't find a good log to cross on is Long Meadow Creek as you descend into Long Meadow at the Sunrise HSC.
That said, in June, the trail will be likely to still have quite a bit of snowpack, and water sheeting off and/or standing where it doesn't...dry year, wet year, whatever...just the nature of the conditions still at that point in time. If there is still a good deal of snow, the trail is blazed up to the lakes and easily navigable if you know what you're doing and what to look for. At the least, you'll want good sealed boots, probably some micro spikes, gaiters, a pair of kayak socks, as well as an extra pair or two of whatever you normally use.
Also, weather isn't particularly stable that time, so full rain gear and some extra insulative layers are a must....