Yes. I have been planting spinach, about a week apart, for about a month. I also planted some kale a few weeks ago. If we get extreme low temperature like we did last year you may have to cover a few items. Last year I picked kale all through the winter. Besides kale and spinach, I have bibb, romaine, carrots and broccoli planted for early winter harvest. I also have onion (seed) and fava beans planted for overwinter (spring/summer harvest).

The OP is asking if they can plant IN the winter, rather than now FOR the winter. I don't know the OP's conditions but I'm imagining that the answer would be no. Even here I wouldn't PLANT in Winter although I'll be harvesting kale and chard all through. There's a difference between planting and sowing, too, and it's not clear which the OP is referring to. Planting now might be fine but sowing unlikely to succeed, I'd guess.

I'm confused about what you are asking, but I can tell you this:

I live in Tennessee, and like maplegarden172...I plant spinach this time of year and harvest in the early spring (i do like to cover with lots of leaves to help insulate the plants).

I was told to plant my fall seeds this week. Of course the weather is against me. Maybe I can get out there tomorrow. It was cold and windy today and the skeeters were heavy around my face.