Digit, it was like that for me when I lived in Montana for 21 years. Ya find yourself using "every trick in the book" and some tricks not in the book to extend the season on both sides. The last 6 years up there I had noticed that Autumn lasted longer before the first finish frost, but it seemed spring's last frost got no later.
Even here I still see the wonderful gardens folks have down south farther 6 weeks ahead of mine.
I still find myself using some of those tricks in the book to extend the season, just not to the same intensity.
Maybe a new thread can be started about building and making all the season extenders. So many of the little plants need that warmth to get growing, without which they'll just kind of sit and wait while whiteflies work on them, or gnats nibble at their roots.
Some of the season extenders that are best are varieties that don't mind a bit of coolness. Sweet Siberian Watermelon keeps making roots at temps cooler than for other varieties, also seems to tolerate a slightly wider range of ph.
Peas grow great in cooler temps, and there truly are a very much more lots more, holy cow, more varieties of Peas than seed catalogs have. Italy and Slow food and "Annalisa" have several kinds different. Native Seed Search in Tucson has something like 10 kinds. That nordgen seedbank up near superman's lair north of norway has I think a thousand peas sorted by species. Red seeded, Brown, yellow...
You do have advantage over southerners up there for your tomatoes. No TMV, and very few blights. Also, for Squashes, no squash borers, at least where I was we had none. I had 2 total hornworms. One Roxy found, the other one got away. 2 hornworms total in 21 years is not bad, but I still have the visual of the beautiful huge Basinga tunneled right through...