Yes, I tried it out I thought it was pretty accurate for southern Minnesota. Have you thought about a geo for northern Minnesota by using data from Fargo North Dakota.
Slow down you'll have a more harmonious outcome
I actually was planning to do a Northern one based on Ada, MN but the limitations with the snow amounts and melting was I felt very prohibiting. I actually cut the average snow for the one I did to 1/3 of the average annual snow fall, just so it would melt in time to actually play the game. My real motivation for the geo in the first place was I tried the Northern Sweden Geo by RM and found it unplayable unless you just want to plant winter crops.