Cool is the rule
I've heard the weather back home is typically beastly, as it usually gets this time of year. Stiffling heat and humidity, enough to make you melt or collapse or at the very least, feel like biting the head off the first person to look at you funny.
My antidote is to stay in this hotel. It's very nice. And the locals are very warm, despite the surroundings.
And if you're in Stockholm to escape the midwest sweatbath, you can always knock back some fine vodka at the Absolut Ice Bar, in which everything is made of ice, including the glasses.