Well, my sister's male and my female, brother & sister, are just 6 months and they are, Billy 34#, Grace 30#, their mother is about 55#s and father 48#s. I also have a female that is 4 1/2 months that is about 22#s, at this point she is petite compared to the other two. Standard poodles can be anything over 15 inches and I have seen them up to 28 inches (which to me is a bit large, but everyone has a right to what they like), they have quite a range of adult size so they can vary quite a bit at any given age depending on how large they are going to mature at.
Here is a photo of each taken last week.
And Billy & Angel sitting together, shows the difference in size with only a month and a half difference in age.