Weather minima: ask your instructor.
They will change as you go through your training, and not always in the same way. I mean, for early solos your instructor might want better visibility than some of the preceding circuit training with an instructor in the right hand seat. Early in the training you really don't want wind to distract you (I am talking about weather here!) but later you'll be able to cope with it better.
So, ask your instructor what he thinks you'll need for the next lesson (unless it's obviously the same as for the previous lesson).