Hi new to the topic. I have no issues with my dogs when it is cold. Well Rottweilers love the cold anyway and good luck getting them back in the house. My 9-month old puppy don't even care about the rain which I love.
I am doing Obedience and agility with her and we already got the AKC STAR Puppy and will start soon the CGC prep.
One agility class was she indicating a scent on the wall without training. Unfortunately the class was already full when I wanted to register. Maybe next time.
So far we are doing well. We just did Beginner Agility and she is performing like a 3 year old trained dog while she is only 9 month with great focus (Her parents have IPO 1 and 3 titles and passed the breed standard suitability test incl. their ancestors)