Rick:

Actually anything above 90 has us pretty well prostrated.  Our norm is
somewhere around 85 with 20-30 percent humidity.  Our temps run pretty much
with Denver with us being a little cooler than Denver in mid summer.  The
air is very clear.  I normally can sharply see mountains 65 miles to the
south and mountains 70 miles to the north from my place.  The clear thin
atmosphere, the sun and the altitude, 6200 feet, can pose real problems to
the unacclimated and unprotected.

Rick Seddon
McIntosh, NM, USA