Google tells me it's supposed to be 16° C, but I've got my "personal heater" (Antec P182, Gigabyte GA-P35-DS3R, C2D E7200, 6x7200RPM HDD) beside me and inside the apartment is usually much warmer than outside so I'd peg the room temp to be around 24° C. The thermostat (on our non-working air-conditioning) agrees with me.