Is it okay to aerate surrounded by the winter months if in that is no snow or rime on the ground? I live in New Jersey and I see closely of thatch in...

I live in New Jersey and I see closely of thatch in my meadow. Is it okay to aerate now? I'm worried if the roots will freeze when exposed to cold nouns.
Answers:    aerate or dethatch?

aerate? -absolutely ok.
no worries about the roots freezing due to exposure.

dethatch? -wait until helpful growing season

(shortest answer i've ever given!)
will not be a problem