I've been 80F or higher 9 times since just May 22nd. Like you, 87F has been my high this month but May's high was 93F, ten degrees hotter than yours.
Given the climo differences between MVL and TAN, it's certainly been hot up here when its hot. When it's cool though it's been cool. I know that sounds weird but SNE seems steadier. We've been wildly swinging from in different directions.
For example, we are +0.1 for the month.. pretty much exactly normal.