This year was an extraordinary year for snowpack in all the western US mountains (except Arizona and New Mexico). There will probably be significant snow left on almost all higher-altitude locations in the Pacific NW in mid-July, and the Wallowas will be no exception.
This site is a good way to keep track of how much snow is left per satellite photos: http://www.nohrsc.noaa.gov/nsa/
Click on the region you want and then click the Snow Depth map.
Watch for trip reports on Portlandhikers.org and NWhikers.net. I've never had much luck getting accurate info from the US Forest Service in Enterprise,OR but it's probably a good idea to call them anyway. Right now, they can't predict mid-July conditions because the melting rate all depends on the weather between now and then.
For a Plan B or Plan C (good idea to have anyway), areas more likely to be pretty well melted out by mid-July are the eastern Pasayten Wilderness in northern WA (Boundary/Pacific NW Trail), the Strawberry Mountain Wilderness south of John Day, OR and Steens Mountain in SE Oregon.