While not applicable to cold, the following make working when it's
hot semi-OK

Attitude - when you're laying on the beach in Maui and it's 98 degrees
that's no problem brah. So a sound generator doing waves and
sea gull cries can help.

Create a breeze - even a little breeze makes you feel cooler - so
a simple fan - set on low so as not to blow stuff around - helps.

Loose clothes - people in the middle east don't go with tank tops
or tight shirts or pants for a reason.

Stay ahead of thirst. When it's hot, by the time you feel thirsty
you're already dehydrated. Lots of fluids, preferably without
caffiene or salt will let you keep working - without falling down
every once in a while.

Music selection - just about any Christmas album. Think "cold",
feel cooler.

"It's not the heat, but the humidity, that gets you." - yeah right.

charlie b
(if you want temperature extremes - head for Central Texas -
30 degree low, 105 degree high the next day, then hail the next
day followed by a week of cloudless 100 -107 degree days. Then
there's a frost. Wait a day or two and you've got lightening storms
you can't imagine 'til you've experienced it, with torrential
rains - blowing horizontally by 40-50 mph winds. Did I mention
the wasps and locust? I think God does all his testing for
things to get sinners' attention in Central Texas)