Grass doesn't grow when it's very cold. If it doesn't grow the roots won't go into the soil, it will just sit there and become dislodged if it's played on..
Grass wont grow below 5 C, as Nut says, it will just turn to mud. Spend the winter getting the area prepped, and any hard standing or paths put in place. Then turf in April and it will grow away well.
Is 5C the same as 43F fidgetbones?
Grass doesn't grow below 43F, I learnt that at school.
For years it was filed as useless info but later refiled as useful
43 F is 6.1 C so near enough on a cold windy day.