After an extremely hot May Scandinavia is now divided. Still mostly very warm in the south, and cold in the Norway with snow even at sea level. Which isn't unheard of in June, but quite unusual for many days in row as now. Oslo has seen temperatures between 2 and 32C so far in June, either end quite close to as far as it can go in June.
The lower troposphere in May as measured by satellites had a hotspot in May. For the NH it came out as +0.40C above the 1981-2010 mean, and -0.05 for the SH.