If the recent warm weather has tempted you to set out petunias or other annuals, you’d better make plans to cover them tonight if you don’t want to replant.

Frost could zap tender plants Saturday morning.

Muskegan Chronicle photo

Clear skies and the arrival of high pressure will allow temperatures to drop into the 30s across southeast Michigan. The low in the Ann Arbor area is expected to be 39 degrees overnight. The advisory area includes all of southeast Michigan as well as the Thumb and northern Lower Michigan.

Saturday will be mostly sunny with a high around 63 degrees. It will be cool again overnight with the low dropping to about 41. We’ll have sunshine Sunday and Monday with gradual warming. The high is expected to be 65 on Sunday and 69 on Monday.

Tuesday, it’ll be partly sunny with a high of 75. The possibility of showers and thunderstorms returns Tuesday night.