Finland will see a full transition to winter weather conditions by the end of the week, according to a forecast by the Finnish Meteorological Institute on Monday. Northern areas will receive heavy snowfall, while central and southern regions will see falling temperatures and mixed precipitation including sleet and snow. The shift begins on Tuesday with snow expected to spread from the Gulf of Bothnia inland to Northern Ostrobothnia, Kainuu, and Lapland. Most of the week’s precipitation in Central and Northern Lapland will fall as snow, while temporary warmer air may bring rain to lower parts of the north midweek.