January weather forecast in Lahti

January in Lahti is the snowiest and the most freezing month of the year. In January, the weather in Lahti is typically freezing. Average daily high temperature in January is about 4 degrees below zero. On average, Lahti has 15 cloudy, 6 snowy, 6 partly cloudy, 3 sunny, and 1 rainy day in January. The snowfalls are usually light.