Överkalix (Swedish: [ˈø̂ːvɛrˌkɑːlɪks]; Finnish: Ylikainuu) is a locality and the seat of Överkalix Municipality in Norrbotten County, Sweden with 975 inhabitants in 2010. Climate. Överkalix has a subarctic climate with significant temperature differences between the warm short summers and the long and cold winters. Its inland position close to sea level ensures Överkalix is more prone to heatwaves than other areas of Norrbotten. Its July temperatures are also due to the perpetual daylight due to its position just below the Arctic Circle.
https://en.wikipedia.org/wiki/%C3%96verkalix