In terms of precipitation, rainfall in Milan ranges from 55.0 - 132.0 inches per month. May is typically the wettest month, when rainfall can reach 132.0 mm. December is typically the driest time to visit Milan when rainfall is around 55.0 mm.
If weather is an important factor for your trip to Milan, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).