Short to long program during UK Winter

during december it gets pretty cold, the past couple years we have had fair bit of snow. so it probably is around 0 degrees give or take and october november probably about 2-6 degrees average. so do you think this would be too cold for it?

I can probably get down to lee valley indoor track once a week.

so lets say i have access to a outdoor track, indoor track once a week, gym, sleds, hills and plyos. How would you organise a weekly training regime with those weather conditions?