Looking at Duluth arpt siting data HOMR, it looks like snow is reported from the NWS office which is about a mile WSW of the arpt. I do know they put up a request for I-Falls arpt this past summer for a snow measuring contractor. MSP arpt has had their Met crew taking measurements since 2020. Prior to that, it looks like they've had a contractor on/around the aprt. As for T snow depth, DLH does report that as seen in their F-6 form, as well as I-Falls, and MSP along with others in the area that take snow readings. (Not co-ops tho)