Quote Originally Posted by Scout620 View Post
I'm ok hiking in heat & humidity as long as it cools down to a somewhat comfortable level at night. I stop hiking in Florida after May as it just doesn't cool down enough at night to sleep comfortably.
Nighttime temps and humidity have been terrible in Northern Virginia recently ... lows only in the mid to high 70s with nearly 100% humidity leading to uncomfortable dew points. Based on the SNP weather reports for elevations above 2,000 feet I think it is only moderately better with elevation:

http://www.srh.noaa.gov/data/LWX/RECLWX

Summertime in Virginia!