When Mary comes into the house crying after finding out from Nellie that Alicia is going to live with Mrs. Farnsworth, it is dark outside. When Charles goes outside to find Laura it's daylight.
At 3m58s When Mary & Laura rush to the creek to rescue the puppies in the sack, they dive into the creek wearing their stockings & shoes. As they swim towards the puppies, both girls are barefoot. After they retrieve the puppies, they return to land wearing their stockings & shoes (4m36s)
The events of part 1 and part 2 obviously happened in November, yet there is no snow, no coats, or any other sign that it's winter. Grace even stated in part 1 that is was hot.
During Julia's funeral, there is continuous heavy rain yet it is clear there is also blazing sunshine and in at least two shots cloudless blue skies.