Tonight light snow will push up from the southwest after midnight, dropping mainly under 1″ across the western half of the state. Thursday afternoon will be a bit different. More moisture will advect in from the south bringing a chance for rain, but as surface temperatures drop below freezing the temperatures higher up in the atmosphere will remain above freezing, so freezing rain is possible with moments of sleet at times as well. This will change over to all snow late Thursday night with less than 1″ in the metro but 1-3″ over the NW part of the state. Snow will wrap up before sunrise on Friday and the daytime hours will be dry.
Unfortunately another wave looks to move through over the weekend and it will have a chance for rain, freezing rain, and snow. The warmest air looks to move through southeast Iowa with heavy snow amounts possible in the NW corner of the state.