Can you wear these socks if the temp is...
Can you wear these socks if the temp is 80 or above?
They'll be pretty hot for that, I'd recommend the "Light" weight ones for hot-weather hiking or running. I use these for trail running and hiking:
Yes, but you may want to consider a sock with a higher percentage of synthetic. This will move the moisture away from your foot better, especially if you have sweaty feet. Try the Teko Synrgi series. http://www.backcountry.com/teko-midweight-hiking-sock-mens.html