The climate is running away, it's hard to keep up with it.
It's been measured on a daily basis for around 60 years now by the Danish Meteorological Institute (DMI). You can follow it on their website, specifically at Ocean.dmi . The data and graphs plotted there is the daily mean temperature of the Arctic area north of the 80th northern parallel and is estimated from the average of the 00z (midnight, GMT) and 12z (noon, GMT) values.
Right now, the temperature is only MINUS 25 C while the long-term mean is more like -29 C for this time of year -- what a heat wave!