Poschiavo has an average of 99.3 days of rain per year and on average receives 1,008 mm (39.7 in) of precipitation. The wettest month is May during which time Poschiavo receives an average of 114 mm (4.5 in) of precipitation. During this month there is precipitation for an average of 11.7 days. The driest month of the year is February with an average of 41 mm (1.6 in) of precipitation over 11.7 days
