An unseasonably cool stretch in May will continue over the next several days, and overnight tonight, temperatures will bottom out near the freezing mark. The National Weather Service has issued a frost advisory for south central Iowa, including Marion and Warren Counties, from 4:00 to 8:00 early Saturday morning.

Conditions are favorable for the development of frost, and a Frost Advisory means that temperatures are expected to fall into the mid 30s°F, which could lead to frost on vegetation. Frost advisories are only issued during the growing season. Residents should cover any sensitive vegetation outdoors. Typically, the final frost of the season takes place during the first week in May, according to 30 year climate averages from the National Weather Service.

Temperatures will generally remain well below average for the next several days, with daytime highs moving between the mid-50s to low-60s, and overnight lows dropping to the upper 30s and lower 40s through the middle of next week. Stay tuned to KNIA/KRLS for the latest weather information.