What's the weather like in northern Europe in July?

Want to go to northern Europe, get dressed and see if you are going to the north or the south. The temperature in July in the northernmost part of Norway is between 5 and 20 degrees Celsius, and in the south it is between 15 and 30 degrees, because Norway has a special geography. But in fact, summer in northern Europe is very hot, so you don't need to wear heavy clothes. Because countries close to the bipolar countries are extremely daytime in summer, it is almost never dark for 24 hours and sunny, so they will not feel cold at all.