January in Heiligenblut am Grossglockner is the snowiest and the most freezing month of the year. In January, the weather in Heiligenblut am Grossglockner is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Heiligenblut am Grossglockner has 13 snowy, 8 partly cloudy, 7 sunny, and 3 cloudy days in January. The snowfalls are usually heavy.