Patrick,
I know first hand, my mother passed away from Melanoma in 2008.
I make my annual visit to a dermatologist and wear a wide brimmed hat and sunscreen when I am outside. My Mother
lived her entire life in Minnesota. So Melanoma does not have any geographical preference. I might look like a old-timer in the wide brimmed hat. But I really don't care, because I know what the consequences can be for lack of sun protection.
I will keep you and your wife in my thoughts and prayers.
Don