We are looking at going to Lake Como in late April 2018. Is it still winter there at that time?
You can find day-by-day historical weather stats on wunderground.com .
It's spring and the lake is a low altitude so snow is unlikely, but the weather in April is still unsettled and somewhat unpredictable therefore rain is certainly possible and so is unseasonably cool (or warm) weather. All you can do now is check weather averages on line, but for an actual forecast you need to check about a week prior.
We were in Lake Como in April in 2016. It was cool during the day and cold at night. I believe it rained a little.
Thanks for the input.