Temperatures this week will be near-normal for mid-January. Although fresh snow cover may keep us on the colder side for much of the week with high's mainly in the 20s. Night lows will generally be in the teens/20s, but will be dictated by the extent of any cloud cover.
The pattern turns active again Friday into the weekend with a snow system moving somewhere through the Midwest. The storm track is a big question mark as of now and will ultimately be the factor on where snow falls. These details will get ironed out in the coming days.
One thing a little more certain is it's going to get cold! An sprawling Arctic high pressure looks to sag into the region which will send temperatures plunging. Daytime highs will likely be in the single digits and teens Saturday and Sunday with night lows near or below zero.
The Climate Prediction Center has a high probability of below normal temperatures for Iowa and much of the Midwest heading into the second half of January.