Iowa’s stretch of unusually warm October weather is coming to an end as a series of weather systems brings thunderstorms, widespread rainfall, and eventually a significant drop in temperatures. The transition begins Monday night as a cold front moves across the state, setting the stage for a much different weather pattern through the remainder of the week. While the first round of thunderstorms Tuesday night could produce isolated severe weather, a second system arriving Wednesday night into Thursday will bring more widespread rain.
The biggest temperature changes will arrive late in the week when a stronger cold front pushes through Iowa, sending afternoon highs into the 50s and 60s. Overnight temperatures could fall into the 30s by Friday night, raising the possibility of frost across portions of the state Saturday morning. For some communities, particularly across northern Iowa, this could be one of the more significant cold spells of the fall season so far…