Summer and winter don’t share any statistically significant correlations (certainly none tied to verifiable climate system dynamics).
Example, 1957 was a super niño onset summer w/ -PMM/-PDO and was a hot summer as well. Also had the solar max/+QBO in a similar stage of shear stress. That turned out to be a very solid winter.
Hmm if the Summer is verifying so warm something says the Winter won't perform. Unless the ridging max centers over the NAO domain - we've pretty much had 14 straight +NAO Winter's in the mean so let's see.