Never too early in Iowa to start thinking about snow days, of course.
Boone Grove High School in Valparaiso, IN is one school that last year dealt with snow days by creating "online days". The premise was that students could still meaningfully interact with the curriculum working online through Moodle, and it would cause less disruption to the continuity of the learning process.
I ran across this reflection from a high school student, Jacob Knecht, who was writing for the school's newspaper. While there isn't much there in terms of the structure or logistics of the day, it is clear that the "online day" was well received by students, faculty, and especially parents. The concern of access at the home was not identified as an issue for BGHS.
One school's success does not dictate it is right for schools in Iowa, but it is good to see that while many Iowa administrators have hypothesized about an "online day" every time they have to call off school, there are schools that have put that into action.