Sunday will be a little bit cooler, with highs in the low 40s. The clouds will increase through the day. Late Sunday night, light snow will be possible, especially over northern Iowa. No snow accumulation in Central Iowa is expected. Minor accumulations along the MN border and in NE Iowa are possible.
There will be brief warm up to the upper 40s on Monday and low 50s on Tuesday before the thermometer comes crashing down on Wednesday. The weather will become blustery and cold on Wednesday as another blast of arctic air arrives.