BRRRRing in Iowa during the winter.

Anything indoors it typically not a problem.  As far as our local climate, concrete/asphalt is typically done late October/early November and starts up again in April.  Roofing/framing/siding etc can go to the beginning of December on a good year and start up again in March.  Utilities and everything else varies depending on the week.  It is an unpredictable climate, it seems like each year is different from the next.  Last year I was ice fishing on Dec 18th and road tripping on the motorcycle Dec 20th.