The National Weather Service has issued a Frost Advisory from 1am Saturday until 8 or 9am for the following counties, Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll, Cass, Cerro Gordo, Crawford, Emmet, Franklin, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Humboldt, Kossuth, Marshall, Palo Alto, Pocahontas, Sac, Story, Tama, Webster, Winnebago, Worth, Wright, Buchanan, Delaware, Dubuque, Benton, Linn, Jones, Jackson, Cedar, Clinton, Mitchell, Howard, Winneshiek, Allamakee, Floyd, Chickasaw, Fayette and Clayton.

Temperatures are expected to drop into the lower and middle 30s across these counties Saturday morning with light winds. This will cause some light frost to form. If you have plants outdoors, you may want to bring them in or cover them up with a light sheet.

NOTE: After the Map was uploaded the NWS in Omaha issued a Frost Advisory for Harrison, Monona, Montgomery, Page, Pottawattamie and Shelby counties from 3am until 8am Saturday