Des Moines, Iowa – Sub-freezing temperatures will settle across much of Iowa and western Illinois overnight, dropping as low as 22 degrees by daybreak Monday and threatening crops, outdoor plumbing, and early-morning travel routines.
According to the National Weather Service in Des Moines and the Quad Cities, a Freeze Warning is in effect from midnight through 9 a.m. Monday for north-central, central, and eastern Iowa, along with parts of northwest and west-central Illinois. Officials warn that widespread frost and hard freeze conditions will impact both rural farmland and urban areas during the early commute window.
Cities including Ames, Fort Dodge, Marshalltown, Waterloo, Cedar Rapids, Iowa City, Davenport, and Moline are all within the warning zone. Temperatures between 22 and 26 degrees are expected across the region, with colder pockets likely in low-lying areas. Major corridors such as I-35, I-80, and I-380 may see reduced visibility in patchy frost, especially on bridges and overpasses where surfaces cool faster.
Agricultural impacts could be significant, particularly for early-season crops and flowering trees. Residents are urged to cover sensitive plants, bring potted vegetation indoors, and disconnect or insulate outdoor hoses to prevent pipe damage. Charging devices and preparing for potential minor service disruptions is also advised.
The freeze will persist through the early morning hours before temperatures rise after 9 a.m. Monday. Additional alerts could be issued if colder conditions expand farther south.
