You should expect better mileage after the engine breaks in, say at 3500-4000 miles or so.Just got our Hybrid Blue about two weeks ago and love it. Great acceleration, quiet and fun to drive. Coming off of a 2019 Santa Fe. Been reading about some of the issues in this forum and a little surprised. We have had very little problems with the ones we've owned. The only thing so far is the fuel economy isn't what they say, getting about 34.6mpg and I drive very conservatively. I assume at this point because it's cold here right now in tropical northeast Ohio lol. Only time will tell.
Also, as the battery undergoes more charge/discharge cycles, it'll hold more charge, thereby giving more "help" to the drivetrain, further improving your mileage - this I'm already noticing in ours which has gone about 2500 miles (4K kms) at this point.
The downside is (since you mention you live in Ohio), winter tires and cold weather (as you pointed out) both conspire to degrade mileage.
Welcome to the group, and good luck!