We here in west Michigan (gr) got down to about 30 inland. 37 in Holland. I have already de-winterized 3 weeks ago. I'm not to concerned about it. It takes a real long hard freeze to get things frosty.
Ive been caught of guard in the past by below freezing temps early in the spring after I already charged my sprinkler system. No issues.
I am in Holland and it is 34F right now. They were forecasting a chance of snow for tonight. On Mondays is when the grass people come to mow. They also do snow. Either way they will work. Tulip Time begins next weekend.
Left work (holland) this morning around 7 and truck said 37. Funny watching it drop the closer I got to Grandville.