Frost possible tonight in Willmar, much of Minn.
WILLMAR -- Frost is possible tonight in Willmar and across much of Minnesota.
The National Weather Service says that while temperatures have again risen into the 50s and low 60s -- and some trees and other plants have started to bud -- temperatures will continue to drop below freezing at night.
Some warming of overnight temperatures is expected as the work week ends, the Weather Service says, but a significant system is expected over the weekend with cold air coming down behind it. Morning lows Sunday night and Monday night are expected to drop into the 20s in many areas of Minnesota with killing freezes likely.